\\n\\n
IntechOpen Book Series will also publish a program of research-driven Thematic Edited Volumes that focus on specific areas and allow for a more in-depth overview of a particular subject.
\\n\\nIntechOpen Book Series will be launching regularly to offer our authors and editors exciting opportunities to publish their research Open Access. We will begin by relaunching some of our existing Book Series in this innovative book format, and will expand in 2022 into rapidly growing research fields that are driving and advancing society.
\\n\\nLaunching 2021
\\n\\nArtificial Intelligence, ISSN 2633-1403
\\n\\nVeterinary Medicine and Science, ISSN 2632-0517
\\n\\nBiochemistry, ISSN 2632-0983
\\n\\nBiomedical Engineering, ISSN 2631-5343
\\n\\nInfectious Diseases, ISSN 2631-6188
\\n\\nPhysiology (Coming Soon)
\\n\\nDentistry (Coming Soon)
\\n\\nWe invite you to explore our IntechOpen Book Series, find the right publishing program for you and reach your desired audience in record time.
\\n\\nNote: Edited in October 2021
\\n"}]',published:!0,mainMedia:{caption:"",originalUrl:"/media/original/132"}},components:[{type:"htmlEditorComponent",content:'With the desire to make book publishing more relevant for the digital age and offer innovative Open Access publishing options, we are thrilled to announce the launch of our new publishing format: IntechOpen Book Series.
\n\nDesigned to cover fast-moving research fields in rapidly expanding areas, our Book Series feature a Topic structure allowing us to present the most relevant sub-disciplines. Book Series are headed by Series Editors, and a team of Topic Editors supported by international Editorial Board members. Topics are always open for submissions, with an Annual Volume published each calendar year.
\n\nAfter a robust peer-review process, accepted works are published quickly, thanks to Online First, ensuring research is made available to the scientific community without delay.
\n\nOur innovative Book Series format brings you:
\n\nIntechOpen Book Series will also publish a program of research-driven Thematic Edited Volumes that focus on specific areas and allow for a more in-depth overview of a particular subject.
\n\nIntechOpen Book Series will be launching regularly to offer our authors and editors exciting opportunities to publish their research Open Access. We will begin by relaunching some of our existing Book Series in this innovative book format, and will expand in 2022 into rapidly growing research fields that are driving and advancing society.
\n\nLaunching 2021
\n\nArtificial Intelligence, ISSN 2633-1403
\n\nVeterinary Medicine and Science, ISSN 2632-0517
\n\nBiochemistry, ISSN 2632-0983
\n\nBiomedical Engineering, ISSN 2631-5343
\n\nInfectious Diseases, ISSN 2631-6188
\n\nPhysiology (Coming Soon)
\n\nDentistry (Coming Soon)
\n\nWe invite you to explore our IntechOpen Book Series, find the right publishing program for you and reach your desired audience in record time.
\n\nNote: Edited in October 2021
\n'}],latestNews:[{slug:"intechopen-supports-asapbio-s-new-initiative-publish-your-reviews-20220729",title:"IntechOpen Supports ASAPbio’s New Initiative Publish Your Reviews"},{slug:"webinar-introduction-to-open-science-wednesday-18-may-1-pm-cest-20220518",title:"Webinar: Introduction to Open Science | Wednesday 18 May, 1 PM CEST"},{slug:"step-in-the-right-direction-intechopen-launches-a-portfolio-of-open-science-journals-20220414",title:"Step in the Right Direction: IntechOpen Launches a Portfolio of Open Science Journals"},{slug:"let-s-meet-at-london-book-fair-5-7-april-2022-olympia-london-20220321",title:"Let’s meet at London Book Fair, 5-7 April 2022, Olympia London"},{slug:"50-books-published-as-part-of-intechopen-and-knowledge-unlatched-ku-collaboration-20220316",title:"50 Books published as part of IntechOpen and Knowledge Unlatched (KU) Collaboration"},{slug:"intechopen-joins-the-united-nations-sustainable-development-goals-publishers-compact-20221702",title:"IntechOpen joins the United Nations Sustainable Development Goals Publishers Compact"},{slug:"intechopen-signs-exclusive-representation-agreement-with-lsr-libros-servicios-y-representaciones-s-a-de-c-v-20211123",title:"IntechOpen Signs Exclusive Representation Agreement with LSR Libros Servicios y Representaciones S.A. de C.V"},{slug:"intechopen-expands-partnership-with-research4life-20211110",title:"IntechOpen Expands Partnership with Research4Life"}]},book:{item:{type:"book",id:"5365",leadTitle:null,fullTitle:"Adhesives - Applications and Properties",title:"Adhesives",subtitle:"Applications and Properties",reviewType:"peer-reviewed",abstract:'This book presents some information regarding adhesives which have applications in industry, medicine and dentistry. The book is divided into two parts: "Adhesives Applications in Medicine and Dentistry" and "Properties of Adhesive." The aim of such a presentation is to present the usage in very different aspects of application of the adhesives and present specific properties of adhesives. Adhesives\' advantageous properties and relatively uncomplicated processing methods contribute to their increasing application and their growing popularity in the industry, medicine and other branches. Some adhesives represent properties superior to those of most adhesive materials, due to their excellent adhesion and chemical resistance. A wide variety of adhesives\' considerable flexibility in modification of properties of adhesives allows adjusting the composition to particular applications.',isbn:"978-953-51-2784-0",printIsbn:"978-953-51-2783-3",pdfIsbn:"978-953-51-4148-8",doi:"10.5772/62603",price:139,priceEur:155,priceUsd:179,slug:"adhesives-applications-and-properties",numberOfPages:398,isOpenForSubmission:!1,isInWos:1,isInBkci:!0,hash:"c2b4cabdd0f77b9b7ab6d38eb8392873",bookSignature:"Anna Rudawska",publishedDate:"November 23rd 2016",coverURL:"https://cdn.intechopen.com/books/images_new/5365.jpg",numberOfDownloads:33790,numberOfWosCitations:70,numberOfCrossrefCitations:47,numberOfCrossrefCitationsByBook:5,numberOfDimensionsCitations:93,numberOfDimensionsCitationsByBook:6,hasAltmetrics:1,numberOfTotalCitations:210,isAvailableForWebshopOrdering:!0,dateEndFirstStepPublish:"March 7th 2016",dateEndSecondStepPublish:"March 28th 2016",dateEndThirdStepPublish:"July 2nd 2016",dateEndFourthStepPublish:"September 30th 2016",dateEndFifthStepPublish:"November 30th 2016",currentStepOfPublishingProcess:5,indexedIn:"1,2,3,4,5,6,7,8",editedByType:"Edited by",kuFlag:!1,featuredMarkup:null,editors:[{id:"110857",title:"Associate Prof.",name:"Anna",middleName:null,surname:"Rudawska",slug:"anna-rudawska",fullName:"Anna Rudawska",profilePictureURL:"https://mts.intechopen.com/storage/users/110857/images/system/110857.jpg",biography:"Prof. Anna Rudawska, Ph.D., DSc, Eng, works in the Faculty of Mechanical Engineering, Lublin University of Technology, Poland. She is an author or co-author of 300 scientific publications in Polish, English, Ukrainian, and Slovak, several monographs and book chapters, and patents and patent applications. Her research focuses on the influence of technological and structural factors on the strength of polymer and metal adhesive joints, design of bonding technology, surface treatment of adherents, properties of adhesives for increasing the strength of adhesive joints, and the modification of epoxy adhesive compounds.",institutionString:"Lublin University of Technology",position:null,outsideEditionCount:0,totalCites:0,totalAuthoredChapters:"2",totalChapterViews:"0",totalEditedBooks:"3",institution:{name:"Lublin University of Technology",institutionURL:null,country:{name:"Poland"}}}],equalEditorOne:null,equalEditorTwo:null,equalEditorThree:null,coeditorOne:null,coeditorTwo:null,coeditorThree:null,coeditorFour:null,coeditorFive:null,topics:[{id:"915",title:"Polymers",slug:"materials-science-biochemistry-polymers"}],chapters:[{id:"52419",title:"Etch-and-Rinse and Self-Etch Adhesives Behavior on Dentin",doi:"10.5772/64856",slug:"etch-and-rinse-and-self-etch-adhesives-behavior-on-dentin",totalDownloads:1600,totalCrossrefCites:0,totalDimensionsCites:0,hasAltmetrics:0,abstract:"Hybridization is a key phenomenon in bonding resin-based composite restorations to dentin, and results from a molecular-level interaction between the resin and the demineralized collagen fibrils network. Nanoleakage occurs when small molecules or ions infiltrate into the hybrid layer. Our work aims to evaluate if the type of solvent and adhesive system influences the morphology of the hybrid layer and the occurrence of nanoleakage within it. Human molar teeth were distributed into six groups corresponding to adhesives with different solvents (ScotchbondTM 1XT, XP BondTM, Prime&Bond® NT, One Coat Bond®, AdheSE® and Xeno® V). Dentin disks (specimens) were cut from those teeth. The corresponding adhesive systems and a microhybrid composite (Synergy® D6) were applied onto them. The specimens were thermocycled, fixed, cut, polished, decalcified, dried, and, for nanoleakage evaluation, immersed into a tracer solution. The morphology and nanoleakage analyses were performed with a high-resolution scanning electron microscope (field-emission scanning electron microscope—FESEM), and the results were statistically processed. AdheSE® achieved the overall best performance. The type of adhesive, the number of steps, and the solvent seem to play a significant role in hybrid layer morphology and nanoleakage within it. The hybrid layer water absorption can determine the adhesion longevity.",signatures:"João Cardoso Ferreira, Patrícia Teixeira Pires, Paulo Ribeiro de Melo\nand Mário Jorge Silva",downloadPdfUrl:"/chapter/pdf-download/52419",previewPdfUrl:"/chapter/pdf-preview/52419",authors:[{id:"186339",title:"Prof.",name:"João",surname:"Ferreira",slug:"joao-ferreira",fullName:"João Ferreira"},{id:"186375",title:"Dr.",name:"Paulo",surname:"Melo",slug:"paulo-melo",fullName:"Paulo Melo"},{id:"186376",title:"Dr.",name:"Mario",surname:"Silva",slug:"mario-silva",fullName:"Mario Silva"},{id:"186377",title:"Dr.",name:"Patricia",surname:"Pires",slug:"patricia-pires",fullName:"Patricia Pires"}],corrections:null},{id:"52154",title:"Biocompatibility of Dental Adhesives",doi:"10.5772/64943",slug:"biocompatibility-of-dental-adhesives",totalDownloads:2063,totalCrossrefCites:4,totalDimensionsCites:4,hasAltmetrics:0,abstract:"The accomplishment of developing a truly adhesive bond between a restorative material and the natural tooth structures is the goal of adhesive dentistry. Dentine adhesive systems come into close contact with dental and oral tissue, especially the pulp and gingival cells. Due to this close and long-term contact, adhesives should exhibit a high degree of biocompatibility. Biocompatibility is one of the most important properties of dental materials, and adhesives are no exception. It has been long demonstrated that different components of adhesives can be released. Numerous in vitro investigations have shown that released monomers and other components can cause damage to cultured cells. In addition, many in vivo studies have shown that uncured components which reach the pulpal space cause inflammatory response and tissue disorganization. Only a combination of various in vitro and in vivo tests can provide an overview of the interaction of biomaterials with the host. Therefore, it is necessary on a regular basis to carry out and re-verify the biological compatibility of the increasing number of new dental materials. Adhesives should be biofunctional, protective, and preventive, with health-promoting effects that contribute to a better prognosis for restorative treatments and its biocompatibility.",signatures:"Antonija Tadin, Lidia Gavić and Nada Galić",downloadPdfUrl:"/chapter/pdf-download/52154",previewPdfUrl:"/chapter/pdf-preview/52154",authors:[{id:"187383",title:"Ph.D.",name:"Antonija",surname:"Tadin",slug:"antonija-tadin",fullName:"Antonija Tadin"},{id:"187385",title:"Prof.",name:"Nada",surname:"Galić",slug:"nada-galic",fullName:"Nada Galić"},{id:"187386",title:"Dr.",name:"Lidia",surname:"Gavić",slug:"lidia-gavic",fullName:"Lidia Gavić"}],corrections:null},{id:"52573",title:"Adhesion in Restorative Dentistry",doi:"10.5772/65605",slug:"adhesion-in-restorative-dentistry",totalDownloads:3364,totalCrossrefCites:2,totalDimensionsCites:7,hasAltmetrics:0,abstract:"Bonding agents play a crucial role in the effective sealing and retention of resin-based composite restorations, which have been increasingly placed and replaced by dentists in many countries around the world. In fact, direct adhesive restoration with composite resins has become the procedure of choice for the treatment of anterior and posterior teeth. However, long-term durability of those restorations may be compromised due to progressive loss of the integrity of adhesive interfaces. This means that no adhesive strategy is free from technique sensitivity. The specificity and proportion of different constitutive molecules, the interaction between them and substrates can differ greatly from one class of adhesive system to another, which can affect bond quality. Protocol simplification has been an inevitable trend that has boosted the use of self-etching and universal systems in adhesive dentistry. However, there is a lack of randomized clinical trials to prove the effectiveness of these systems. This chapter gives an overview of the most important issues in dental adhesion and adhesive systems, as well, discussing their composition and clinical use.",signatures:"Alexandra Vinagre and João Ramos",downloadPdfUrl:"/chapter/pdf-download/52573",previewPdfUrl:"/chapter/pdf-preview/52573",authors:[{id:"186163",title:"Ph.D.",name:"Alexandra",surname:"Vinagre",slug:"alexandra-vinagre",fullName:"Alexandra Vinagre"},{id:"194352",title:"Prof.",name:"João",surname:"Ramos",slug:"joao-ramos",fullName:"João Ramos"}],corrections:null},{id:"52267",title:"Adhesive Materials for Biomedical Applications",doi:"10.5772/64958",slug:"adhesive-materials-for-biomedical-applications",totalDownloads:2419,totalCrossrefCites:1,totalDimensionsCites:5,hasAltmetrics:0,abstract:"Recently, polymeric bioadhesives have become known as promising alternatives to sutures, staples, and wires. Traditional wound closure techniques are time-consuming to apply and cause additional tissue damage. In instances of large-scale hemorrhage or minimally invasive laparoscopic surgery, sutures are impractical to apply. Alternatively, newly developed bioadhesives are polymers that can be dripped or sprayed over superficial or internal injuries, solidifying in situ to form a seal that apposes tissue or arrests bleeding over large areas. This review will outline the main categories of polymers that have been investigated for these applications. The chemistry, mechanisms of adhesion, and advantages and limitations of each category will be described. In addition, needs for next-generation adhesives in tissue engineering will be discussed. For the repair of certain load-bearing areas of the body, such as cartilage and the intervertebral disc, scaffold adhesion is necessary for anchoring the scaffold in place and providing adequate transmission of forces. Researchers continue developing new formulations that exhibit improved biocompatibility, strength, elasticity, and degradability. These advances promise to improve clinical outcomes by enhancing bleeding control and wound healing. In the long term, bioadhesives will play an important role in making orthopedic and musculoskeletal tissue engineering clinically feasible.",signatures:"Andrea J Vernengo",downloadPdfUrl:"/chapter/pdf-download/52267",previewPdfUrl:"/chapter/pdf-preview/52267",authors:[{id:"186942",title:"Dr.",name:"Andrea",surname:"Vernengo",slug:"andrea-vernengo",fullName:"Andrea Vernengo"}],corrections:null},{id:"52081",title:"Adhesive Restorations and the Oral Environmental Behaviour",doi:"10.5772/64973",slug:"adhesive-restorations-and-the-oral-environmental-behaviour",totalDownloads:1823,totalCrossrefCites:0,totalDimensionsCites:1,hasAltmetrics:0,abstract:"Adhesive restorations are based on the use of materials, which have the capacity to bond tooth effectively. This is possible due to a polymerizing hybrid layer interface created by the use of the Etch&Rinse (ERAs) and self-etching adhesives (SEAs). Bonding using ERAs include the acid-etching removal of the mineral phase from the substrates of enamel and dentine. A hybrid layer results by filling the voids left by minerals by means of adhesive monomers. However, etching dentine may result in too much demineralization and wetness with discrepancies in reinforcement at the bottom of hybrid layer. SEAs avoid the separate etching phase of ERAs using acidic functional monomers. In the two-step SEAs, hybridization is created by the application of a primer of different pH acidity, followed by an adhesive resin. In the ‘One-Step SEAs’, acidic and adhesive monomers are mixed in the same bottle thereby causing hybridization at the same time. 10-MDP mild SEAs represent the better bonding technology in dentistry due to the ability to form a strong chemical bond in tooth tissue. However, adhesive restorations have high vulnerability in the oral environment, which have been attributed to the esterase activity of Streptococcus mutans and hydrolysis by matrix metalloproteinase.",signatures:"Egle Milia, Roberto Pinna, Enrica Filigheddu and Stefano Eramo",downloadPdfUrl:"/chapter/pdf-download/52081",previewPdfUrl:"/chapter/pdf-preview/52081",authors:[{id:"187630",title:"Ph.D.",name:"Roberto",surname:"Pinna",slug:"roberto-pinna",fullName:"Roberto Pinna"},{id:"194269",title:"Dr.",name:"Enrica",surname:"Filigheddu",slug:"enrica-filigheddu",fullName:"Enrica Filigheddu"},{id:"194270",title:"Prof.",name:"Stefano",surname:"Eramo",slug:"stefano-eramo",fullName:"Stefano Eramo"},{id:"194271",title:"Prof.",name:"Egle",surname:"Milia",slug:"egle-milia",fullName:"Egle Milia"}],corrections:null},{id:"52363",title:"Experimental Investigation on the Self-Healing Efficiency of Araldite 2011 Adhesive Reinforced with Thermoplastic Microparticles",doi:"10.5772/65167",slug:"experimental-investigation-on-the-self-healing-efficiency-of-araldite-2011-adhesive-reinforced-with-",totalDownloads:2203,totalCrossrefCites:4,totalDimensionsCites:6,hasAltmetrics:0,abstract:"Newly developed self-healing technologies allow self-repair of adhesively bonded joints without the need for replacing the damaged joint with a new one. This study addresses to define experimentally the self-healing ability and efficiency of the Araldite 2011 epoxy adhesive reinforced with the thermoplastic co-polyester (TPC). Heating the joint results in melting the co-polyester in adhesive, and then it is expected to repair the damaged region by the melted co-polyester. Firstly, before applying the self-healing process, a preliminary study was applied to define whether selected adhesive is compatible with the thermoplastic particles in terms of self-healing. From the initial results, it is seen that Araldite 2011 adhesive is suitable for use in the self-healing mechanism. In the healing cycle, initial crack in the reinforced adhesive was propagated until 30 mm during the double cantilever beam (DCB) testing. The fractured specimens were repeatedly healed in terms of the close-then-heal (CTH) scheme until no healing has taken place. After the healing process was completed, the healing efficiency was defined using the fracture energy values. In this study, the healing process was repeated two times with the acceptable healing efficiencies. It is concluded that the damaged reinforced adhesive can repair itself with a considerable healing efficiency.",signatures:"Halil Özer and Engin Erbayrak",downloadPdfUrl:"/chapter/pdf-download/52363",previewPdfUrl:"/chapter/pdf-preview/52363",authors:[{id:"186177",title:"Prof.",name:"Halil",surname:"Ozer",slug:"halil-ozer",fullName:"Halil Ozer"},{id:"187497",title:"M.Sc.",name:"Engin",surname:"Erbayrak",slug:"engin-erbayrak",fullName:"Engin Erbayrak"}],corrections:null},{id:"52691",title:"Research Progress on Formaldehyde‐Free Wood Adhesive Derived from Soy Flour",doi:"10.5772/65502",slug:"research-progress-on-formaldehyde-free-wood-adhesive-derived-from-soy-flour",totalDownloads:2297,totalCrossrefCites:4,totalDimensionsCites:7,hasAltmetrics:0,abstract:"Soy‐based adhesives have been regarded as the most suitable candidates for wood industry. For a widespread use of soy‐based adhesives, new technologies need to be developed to improve the water resistance. An overview on the methods to improve water resistance of soy‐based adhesives is presented. Denaturants were once considered necessary to modify soy protein. However, water‐resistant soy adhesives could be prepared by simply removing water‐soluble carbohydrates and low molecular peptides from soy flour. In addition, proper grafting and cross‐linking agents help to prepare water‐resistant soy‐based adhesives, which are used widely to bond interior wood composites. In particular, a new type of polyamidoamine (PADA) resin and an itaconic acid‐based polyamidoamine‐epichlorohydrin (IA‐PAE) resin were synthesized to perform as cross‐linking agents for soy‐based adhesives. This review concludes that soy‐based adhesives have great potential for use in numerous applications. However, future work is still needed to make soy‐based adhesives more competitive with synthetic adhesives.",signatures:"Chengsheng Gui, Jin Zhu, Zhongtao Zhang and Xiaoqing Liu",downloadPdfUrl:"/chapter/pdf-download/52691",previewPdfUrl:"/chapter/pdf-preview/52691",authors:[{id:"186174",title:"Dr.",name:"Chengsheng",surname:"Gui",slug:"chengsheng-gui",fullName:"Chengsheng Gui"},{id:"194584",title:"Prof.",name:"Xiaoqing",surname:"Liu",slug:"xiaoqing-liu",fullName:"Xiaoqing Liu"}],corrections:null},{id:"52127",title:"Evaluation of Addition of Reactive Resin for an Adhesive Formulation of Pressure-Sensitive Adhesive",doi:"10.5772/64941",slug:"evaluation-of-addition-of-reactive-resin-for-an-adhesive-formulation-of-pressure-sensitive-adhesive",totalDownloads:2519,totalCrossrefCites:0,totalDimensionsCites:0,hasAltmetrics:0,abstract:"Nowadays, adhesive industry is growing, and its development will be important in a short future because it offers good returns, and in some cases it is a better option for packaging and sealing with advantages in prices, productivity and weight reduction. In terms of joining and/or sealing, adhesives are well positioned among joining systems; however, knowledge about adhesives is need for their efficient use and only through proper design of the union can be achieved satisfactory results. In this chapter, a development of a formulation of pressure-sensitive adhesive based on styrene-butadiene copolymers using a reactive resin is reported. Non-aromatic solvents were used in adhesive formulation with the aim of avoiding the emission of harmful solvents into the Atmosphere, and the adequate combination and amount of solvents were found. The effect of addition of a phenolic resin in the adhesive formulation as a crosslinking agent was evaluated. By means Fourier Transform Infrared spectroscopy (FTIR), the crosslinking reaction was also studied. The performance of adhesive formulation was evaluated by means of dynamic mechanical analysis (DMA).",signatures:"Tzeitel Hernández-Martínez, Beatriz Adriana Salazar Cruz, José Luis\nRivera-Armenta, María Yolanda Chávez-Cinco, María Leonor\nMéndez-Hernández and Ulises Paramo-García",downloadPdfUrl:"/chapter/pdf-download/52127",previewPdfUrl:"/chapter/pdf-preview/52127",authors:[{id:"107855",title:"Dr.",name:"Jose Luis",surname:"Rivera Armenta",slug:"jose-luis-rivera-armenta",fullName:"Jose Luis Rivera Armenta"},{id:"171043",title:"Dr.",name:"Beatriz Adriana",surname:"Salazar-Cruz",slug:"beatriz-adriana-salazar-cruz",fullName:"Beatriz Adriana Salazar-Cruz"},{id:"186466",title:"MSc.",name:"Tzeitel",surname:"Hernandez-Martinez",slug:"tzeitel-hernandez-martinez",fullName:"Tzeitel Hernandez-Martinez"},{id:"186467",title:"MSc.",name:"Maria Yolanda",surname:"Chavez-Cinco",slug:"maria-yolanda-chavez-cinco",fullName:"Maria Yolanda Chavez-Cinco"},{id:"186468",title:"Dr.",name:"Maria Leonor",surname:"Mendez-Hernandez",slug:"maria-leonor-mendez-hernandez",fullName:"Maria Leonor Mendez-Hernandez"},{id:"186469",title:"Dr.",name:"Ulises",surname:"Paramo-Garcia",slug:"ulises-paramo-garcia",fullName:"Ulises Paramo-Garcia"}],corrections:null},{id:"52122",title:"What are the Health Risks of Occupational Exposure to Adhesive in the Shoe Industry?",doi:"10.5772/64936",slug:"what-are-the-health-risks-of-occupational-exposure-to-adhesive-in-the-shoe-industry-",totalDownloads:2039,totalCrossrefCites:1,totalDimensionsCites:1,hasAltmetrics:1,abstract:"The term “shoe” covers a wide range of products made from various materials. Organic solvents (OS) are components of various products such as the adhesives which are used in many industries. The shoe industry consumes large amounts of adhesives. This chemical risk assessment (CRA) is to validate the hypothesis of decreasing gradient of RA craft enterprises to industrial enterprises through the semi-industrial. The simplified methodology CRA of INRS was applied. For each chemical, a hazard class is assigned based on the sign, and then the potential exposure class is determined according to parameters “quantity and frequency of use”. Our RA process is complete with ambient measurements for solvents to which employees are most frequently exposed. Adhesives being constituted as solvent mixture, we have conventionally used an exposure index which is compared with the limit values. The simplified method CRA of INRS was chosen because it is one of the reference methods in RA established from the Kinney model. If these atmospheric samples and toxicology tests were made for the first time in the shoe industry in Sfax, they concerned a sample of companies of the three shoe manufacturing processes preceded by a preliminary RA with post-study and inventory of products handled.",signatures:"Imed Gargouri, Moncef Khadhraoui and Boubaker Elleuch",downloadPdfUrl:"/chapter/pdf-download/52122",previewPdfUrl:"/chapter/pdf-preview/52122",authors:[{id:"186371",title:"Associate Prof.",name:"Imed",surname:"Gargouri",slug:"imed-gargouri",fullName:"Imed Gargouri"},{id:"188100",title:"Dr.",name:"Moncef",surname:"Khadhraoui",slug:"moncef-khadhraoui",fullName:"Moncef Khadhraoui"},{id:"188101",title:"Prof.",name:"Boubaker",surname:"Elleuch",slug:"boubaker-elleuch",fullName:"Boubaker Elleuch"}],corrections:null},{id:"52871",title:"Fracture Toughening Mechanisms in Epoxy Adhesives",doi:"10.5772/65250",slug:"fracture-toughening-mechanisms-in-epoxy-adhesives",totalDownloads:2534,totalCrossrefCites:12,totalDimensionsCites:26,hasAltmetrics:0,abstract:"Fracture toughness is generally considered as the main properties of a polymer or a polymer adhesive system for measuring the material resistance to the extension of cracks. Epoxy adhesives are generally brittle in nature; however, the addition of a second dispersed phase could induce a remarkable increase of damage tolerance performance by an enhancement of the material fracture toughness. The fracture behavior of a filled epoxy resin is strongly affected by the dimensions, the shape, and the chemical nature of the considered filler. The chapter describes the different toughening mechanisms for polymer adhesives with special attention toward innovative nanofiller such as graphene nanoplatelets and hyperbranched polymer nanoparticles.",signatures:"Aldobenedetto Zotti, Simona Zuppolini, Mauro Zarrelli and Anna\nBorriello",downloadPdfUrl:"/chapter/pdf-download/52871",previewPdfUrl:"/chapter/pdf-preview/52871",authors:[{id:"186421",title:"Dr.",name:"Anna",surname:"Borriello",slug:"anna-borriello",fullName:"Anna Borriello"},{id:"194303",title:"Mr.",name:"Aldobenedetto",surname:"Zotti",slug:"aldobenedetto-zotti",fullName:"Aldobenedetto Zotti"},{id:"194304",title:"Dr.",name:"Simona",surname:"Zuppolini",slug:"simona-zuppolini",fullName:"Simona Zuppolini"},{id:"194305",title:"Dr.",name:"Mauro",surname:"Zarrelli",slug:"mauro-zarrelli",fullName:"Mauro Zarrelli"}],corrections:null},{id:"52676",title:"Wood Adhesives and Bonding Theory",doi:"10.5772/65759",slug:"wood-adhesives-and-bonding-theory",totalDownloads:4571,totalCrossrefCites:12,totalDimensionsCites:26,hasAltmetrics:0,abstract:"In this last century, world had grown faster than before; now people need more furniture than in the past century. More furniture means, more particleboards and more adhesives. Wood adhesives are used in every step of furniture manufacturing. Wood adhesives aim to bond wooden materials with each other or with different materials. Today, production with a faster pace is more important. Furniture production lines could be more productive with fast curing glues. Wood adhesives are used in more than 70% of wood products today in the world. The main reason is their use in gluing furniture joints and wood composite materials. In this chapter, readers can find four different topics: (1) technical properties of wood adhesives, (2) environment friendly adhesives, (3) semisynthetic adhesives, and (4) synthetic adhesives.",signatures:"Onur Ülker",downloadPdfUrl:"/chapter/pdf-download/52676",previewPdfUrl:"/chapter/pdf-preview/52676",authors:[{id:"186443",title:"Dr.",name:"Onur",surname:"Ülker",slug:"onur-ulker",fullName:"Onur Ülker"}],corrections:null},{id:"52991",title:"Dynamic Characterization of Adhesive Materials for Vibration Control",doi:"10.5772/66104",slug:"dynamic-characterization-of-adhesive-materials-for-vibration-control",totalDownloads:1716,totalCrossrefCites:0,totalDimensionsCites:0,hasAltmetrics:0,abstract:"This chapter focuses on the dynamic characterization of adhesive materials for vibration control proposes. First, the experimental characterization and modelization of the relaxation and complex moduli of the flexible adhesive ISR 70-03 by means of a dynamic mechanical thermal analysis technique (DMTA) are presented. Then, the interconversion path between the relaxation modulus \n\n\nE\n\n(\nt\n)\n\n\n\n and the corresponding complex modulus \n\n\n\nE\n*\n\n\n(\nω\n)\n\n\n\n for linear viscoelastic solid materials is explored. In contrast to other approximate methods, in this work the fast Fourier transform (FFT) algorithm is directly applied on relaxation functions. Finally, an experimental study for the structural noise and vibration reduction in a cabin elevator by means of adhesive-bonded joints of panels is presented.",signatures:"Jon García-Barruetabeña and Fernando Cortés Martínez",downloadPdfUrl:"/chapter/pdf-download/52991",previewPdfUrl:"/chapter/pdf-preview/52991",authors:[{id:"183342",title:"Dr.",name:"Fernando",surname:"Cortés",slug:"fernando-cortes",fullName:"Fernando Cortés"},{id:"184840",title:"Dr.",name:"Jon",surname:"García-Barruetabeña",slug:"jon-garcia-barruetabena",fullName:"Jon García-Barruetabeña"}],corrections:null},{id:"52916",title:"Thermoplastic Adhesive for Automotive Applications",doi:"10.5772/65168",slug:"thermoplastic-adhesive-for-automotive-applications",totalDownloads:3012,totalCrossrefCites:7,totalDimensionsCites:10,hasAltmetrics:0,abstract:"The objective of this study is to give a general overview on the thermoplastic adhesives used in the automotive sector. Some of the main applications in which the hot-melt adhesives (HMAs) are used in automotive industries are indicated, together with the adhesive characteristics that explain the reasons for their adoption. The chemical and mechanical behavior of these adhesives and the generally used experimental characterization methods are presented and opportunely criticized. In this study, some of the main properties of thermoplastic adhesives are reviewed together with the standard tests used for their characterization. For what concerns the structural performance, single lap joint test is used to determine the shear strength of the adhesive joint. Thermogravimetric analysis and Fourier transform infrared spectroscopy are used to characterize the chemical properties of the adhesive. This study clarifies what are the potentialities of a thermoplastic adhesive in car industries compared to other adhesives.",signatures:"Giovanni Belingardi, Valentina Brunella, Brunetto Martorana and\nRaffaele Ciardiello",downloadPdfUrl:"/chapter/pdf-download/52916",previewPdfUrl:"/chapter/pdf-preview/52916",authors:[{id:"186628",title:"Prof.",name:"Giovanni",surname:"Belingardi",slug:"giovanni-belingardi",fullName:"Giovanni Belingardi"},{id:"187275",title:"Dr.",name:"Valentina",surname:"Brunella",slug:"valentina-brunella",fullName:"Valentina Brunella"},{id:"187276",title:"Dr.",name:"Brunetto",surname:"Martorana",slug:"brunetto-martorana",fullName:"Brunetto Martorana"},{id:"187277",title:"MSc.",name:"Raffaele",surname:"Ciardiello",slug:"raffaele-ciardiello",fullName:"Raffaele Ciardiello"}],corrections:null},{id:"52123",title:"Ab-Initio Modeling of Adhesive Behaviors at Material Interfaces",doi:"10.5772/64904",slug:"ab-initio-modeling-of-adhesive-behaviors-at-material-interfaces",totalDownloads:1630,totalCrossrefCites:0,totalDimensionsCites:0,hasAltmetrics:0,abstract:"In this chapter, density functional theory (DFT) is employed to identify the essentials of adhesive formation at the Al/Ceramic interfaces. Analyses of electronic structure in the DFT used for atomic bond evolution at interfaces, indicate that, adhesion energy mostly dominated by surface energy, may lead to formation of adhesives, which bind two type bulk-materials strongly together, especially for those polar systems involving cubic oxides, carbides and nitrides. In addition, ab-initio molecular dynamics (AIMD) based upon the DFT is adopted, for example, in the simulation of chemical reaction between two contacting reactive slabs: pure aluminum and iron-oxide. This may provide an insight into the dynamical formation of an adhesive (amorphous Al2O3-texture) occurring between two nascent material surfaces if lubricants are not present or are insufficient. Such a texture may bond onto a hard-roller surface as a protective thin film to resist the elevated temperature.",signatures:"Jun Zhong",downloadPdfUrl:"/chapter/pdf-download/52123",previewPdfUrl:"/chapter/pdf-preview/52123",authors:[{id:"187258",title:"Prof.",name:"Jun",surname:"Zhong",slug:"jun-zhong",fullName:"Jun Zhong"}],corrections:null}],productType:{id:"1",title:"Edited Volume",chapterContentType:"chapter",authoredCaption:"Edited by"},subseries:null,tags:null},relatedBooks:[{type:"book",id:"6736",title:"Abrasive Technology",subtitle:"Characteristics and Applications",isOpenForSubmission:!1,hash:"928e702841e3f565da642039ea0c31ce",slug:"abrasive-technology-characteristics-and-applications",bookSignature:"Anna Rudawska",coverURL:"https://cdn.intechopen.com/books/images_new/6736.jpg",editedByType:"Edited by",editors:[{id:"110857",title:"Associate Prof.",name:"Anna",surname:"Rudawska",slug:"anna-rudawska",fullName:"Anna Rudawska"}],equalEditorOne:null,equalEditorTwo:null,equalEditorThree:null,productType:{id:"1",chapterContentType:"chapter",authoredCaption:"Edited by"}},{type:"book",id:"7679",title:"Adhesives and Adhesive Joints in Industry Applications",subtitle:null,isOpenForSubmission:!1,hash:"c52e732b7cc9463f2ddda5b46fca9ad3",slug:"adhesives-and-adhesive-joints-in-industry-applications",bookSignature:"Anna Rudawska",coverURL:"https://cdn.intechopen.com/books/images_new/7679.jpg",editedByType:"Edited by",editors:[{id:"110857",title:"Associate Prof.",name:"Anna",surname:"Rudawska",slug:"anna-rudawska",fullName:"Anna Rudawska"}],equalEditorOne:null,equalEditorTwo:null,equalEditorThree:null,productType:{id:"1",chapterContentType:"chapter",authoredCaption:"Edited by"}},{type:"book",id:"3043",title:"New Polymers for Special Applications",subtitle:null,isOpenForSubmission:!1,hash:"dd782fff3bea8992c224dfd3280d6cd1",slug:"new-polymers-for-special-applications",bookSignature:"Ailton De Souza Gomes",coverURL:"https://cdn.intechopen.com/books/images_new/3043.jpg",editedByType:"Edited by",editors:[{id:"135416",title:"Dr.",name:"Ailton",surname:"De Souza Gomes",slug:"ailton-de-souza-gomes",fullName:"Ailton De Souza Gomes"}],equalEditorOne:null,equalEditorTwo:null,equalEditorThree:null,productType:{id:"1",chapterContentType:"chapter",authoredCaption:"Edited by"}},{type:"book",id:"1573",title:"Thermoplastic Elastomers",subtitle:null,isOpenForSubmission:!1,hash:"68733430093bd948f36fd95ab2ff4746",slug:"thermoplastic-elastomers",bookSignature:"Adel Zaki El-Sonbati",coverURL:"https://cdn.intechopen.com/books/images_new/1573.jpg",editedByType:"Edited by",editors:[{id:"98324",title:"Prof.",name:"Adel",surname:"El-Sonbati",slug:"adel-el-sonbati",fullName:"Adel El-Sonbati"}],equalEditorOne:null,equalEditorTwo:null,equalEditorThree:null,productType:{id:"1",chapterContentType:"chapter",authoredCaption:"Edited by"}},{type:"book",id:"467",title:"Carbon Nanotubes",subtitle:"Polymer Nanocomposites",isOpenForSubmission:!1,hash:null,slug:"carbon-nanotubes-polymer-nanocomposites",bookSignature:"Siva Yellampalli",coverURL:"https://cdn.intechopen.com/books/images_new/467.jpg",editedByType:"Edited by",editors:[{id:"62863",title:"Dr.",name:"Siva",surname:"Yellampalli",slug:"siva-yellampalli",fullName:"Siva Yellampalli"}],equalEditorOne:null,equalEditorTwo:null,equalEditorThree:null,productType:{id:"1",chapterContentType:"chapter",authoredCaption:"Edited by"}},{type:"book",id:"2003",title:"Polyurethane",subtitle:null,isOpenForSubmission:!1,hash:"7391b5a0085d7c0aa0a5c75ee6f275b2",slug:"polyurethane",bookSignature:"Fahmina Zafar and Eram Sharmin",coverURL:"https://cdn.intechopen.com/books/images_new/2003.jpg",editedByType:"Edited by",editors:[{id:"89672",title:"Dr.",name:"Fahmina",surname:"Zafar",slug:"fahmina-zafar",fullName:"Fahmina Zafar"}],equalEditorOne:null,equalEditorTwo:null,equalEditorThree:null,productType:{id:"1",chapterContentType:"chapter",authoredCaption:"Edited by"}},{type:"book",id:"2385",title:"Polymerization",subtitle:null,isOpenForSubmission:!1,hash:"e83b64f8e9875e507d879fede9f34d1a",slug:"polymerization",bookSignature:"Ailton De Souza Gomes",coverURL:"https://cdn.intechopen.com/books/images_new/2385.jpg",editedByType:"Edited by",editors:[{id:"135416",title:"Dr.",name:"Ailton",surname:"De Souza Gomes",slug:"ailton-de-souza-gomes",fullName:"Ailton De Souza Gomes"}],equalEditorOne:null,equalEditorTwo:null,equalEditorThree:null,productType:{id:"1",chapterContentType:"chapter",authoredCaption:"Edited by"}},{type:"book",id:"2383",title:"Polyester",subtitle:null,isOpenForSubmission:!1,hash:"79fd9d6314f8e1abd60d7e21896ce878",slug:"polyester",bookSignature:"Hosam El-Din M. 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Numerous biotic stresses are of historical significance, for instance, the potato blight in Ireland, coffee rust in Brazil, maize leaf blight caused by
Plant mechanisms of resistance to various pathogens and insect pests are known to involve an array of morphological, genetic, biochemical and molecular processes [5]. These mechanisms may be expressed continuously (constitutively) as preformed resistance, or they may be inducible and deployed only after attack. Plant success in deploying these resistance mechanisms is an evolved ability to persist in unfavourable and variable environments [6]. The recent realization that plant mechanisms of disease/insect resistance or susceptibility are related to mechanistic animal immunity [7] has significantly reshaped our view of plant immunity. The identification of plant pattern recognition receptors (PRRs) that sense pathogens‘ or insect pests‘conserved molecules termed pathogen-associated molecular patterns or herbivore-associated molecular patterns (PAMPs/MAMPs/HAMPs)—and the subsequent PAMP-triggered immunity (PTI) [8] is a paradigm for plant-pathogen interaction studies.
\nOn the other hand, the ability of pathogens/insect pests to suppress or evade PTI, as a structural and functional basis of pathogen survival and evolutionary dynamics in their feeding mechanisms has revitalized research on the so-called ‘gene-for-gene’ effector induced resistance in plants. It is now clear that effectors are important determinants of pathogens’ ability to evade the plant’s arsenal targeted towards PAMPs/HAMPs. Effector induced resistance or vertical resistance, often interchangeably translated in modern terms as effector triggered immunity (ETI), is the most successful means of controlling pathogens able to evade PTI [6]. ETI engages a compensatory mechanism within the defense network to transcriptionally coordinate and boost the defense output against pathogens. ETI mostly relies on the endogenious NB-LRR protein products encoded by the resistance (R)-genes. Although R gene mediated resistance is generally not durable, ETI is now effectively deployed through pyramiding of several resistance (R)-genes in the same cultivar, which increases resistance durability and spectrum.
\nAnother aspect of resistance that has gained significance in plant defence studies is the systemic acquired resistance (SAR), in which defence proteins accumulate not only at the site of infection but also systemically in uninfected tissues and/or plants. SAR provides long-term defense against a broad-spectrum of pathogens and insects. Another form of induced resistance, which, in many aspects, is similar to SAR, is induced systemic resistance (ISR). ISR is potentiated by plant growth promoting rhizobacteria (PGPR), many of them belonging to
These are the aspects that this chapter has addressed to provide background information for a more detailed discussion of the diverse aspects of plant defence patterns, including qualitative and quantitative mechanisms and their associated molecular patterns. Although pathogenic mechanisms would be interesting to the reader, this chapter does not delve extensively into this aspect, except to mention it as a consideration in emphasizing certain aspects of plant resistance. For additional background, the reader is referred to excellent reviews and the references therein that address plant-pathogen interaction.
\nPlants respond to various pathogens through an intricate and dynamic defence system. The mechanism of defence has been classified as innate and systemic plant response. The overview of plant defence response is represented in Figure 1. An innate defence is exhibited by the plant in two ways, viz., specific (cultivar/pathogen race specific) and non-specific (non-host or general resistance) [8]. The molecular basis of non-host resistance is not well studied, but presumably relies on both constitutive barriers and inducible responses that involve a large array of proteins and other organic molecules produced prior to infection or during pathogen attack [9, 10]. Constitutive defences include morphological and structural barriers (cell walls, epidermis layer, trichomes, thorns, etc.), chemical compounds (metabolites, phenolics, nitrogen compounds, saponins, terpenoids, steroids and glucosinolates), and proteins and enzymes [11, 12, 199]. These compounds confer tolerance or resistance to biotic stresses by not only protecting the plant from invasion, but also giving the plant strength and rigidity. The inducible defences, e.g., the production of toxic chemicals, pathogen-degrading enzymes e.g., chitinases and glucanases, and deliberate cell suicide are conservatively used by plants because of the high energy costs and nutrient requirements associated with their production and maintenance. These compounds may be present in their biologically active forms or stored as inactive precursors that are converted to their active forms by host enzymes in response to pathogen attack or tissue damage. Plant defence strategies involving these compounds can fall in either category, innate or SAR. Although innate immunity is of greater efficiency and is the most common form of plant resistance to microbes, both defence strategies depend on the ability of the plant to distinguish between self and non-self molecules. The molecular bases of these defence mechanisms are discussed below.
\nOverview of cellular mechanisms of biotic stress response leading to innate immunity and systemic acquired resistance. Plant PRRs or R-genes perceive PAMPS/DAMPs and effectors, respectively. Inside the cell, an overlapping set of downstream immune responses results from the PTI/ETI continuum. This includes the activation of multiple signaling pathways involving reactive oxygen species (ROS), defense hormones (such as salicylic acid, jasmonic acid and ethylene), mitogen activated protein kinases (MAPK), and transcription factor families, e.g., AP2/ERF, WRKY, MYB, bZIP etc. these signals activate either innate response or acquired immune response or both.
Innate immunity in plants is divided into microbial-associated molecular-pattern-triggered immunity (MTI; also called PTI) and effector-triggered immunity (ETI). In MTI/PTI, innate immunity is defined by receptors for microbe-associated molecules, conserved mitogen-associated protein kinase signalling cascades and the production of antimicrobial peptides/compounds [13]. Recognition of microbes is divided into two branches, one involving slowly evolving microbial- or pathogen-associated molecular patterns, such as fungal chitin, xylanase or bacterial flagellin, lipopolysaccharides and peptidoglycans [14], and the other that responds to a compromised ‘self’, also called damage-associated molecular patterns (DAMPs) [14, 15]. Both PAMPs and DAMPs are recognized by transmembrane pattern recognition receptors (PRRs).
\nA common strategy employed by adapted pathogens is to secrete effector proteins that avoid or regulate PTI recognition. To counter this stealth afforded by the microbial effectors, plants have evolved an intracellular surveillance involving polymorphic NB-LRR protein products encoded by resistance (R) genes, named after their characteristic feature due to the presence of nucleotide binding (NB) and leucine-rich repeat (LRR) domains [9]. This type of plant defence is referred to as ETI and is synonymous to pathogen race/host plant cultivar-specific plant disease resistance [8].
\nGenerally, PTI and ETI trigger similar defence responses, but ETI is much faster and quantitatively stronger [16]. ETI is often associated with a localized cell death termed the hypersensitive response (HR) that functions to restrict further spread of microbial attack [9, 17]. Hence, the important feature of ETI is the ability to sense microbe-mediated modifications inferred on points of vulnerability in the host, whereas PTI is able to sense infectious-self and non-self. By guarding against weak points or even setting up decoys to confuse invaders, ETI is an efficient defence system for more progressed infections [15, 18], whereas PTI is important for non-host resistance and for basal immunity in susceptible host plant cultivars. In the following section, we will discuss novel insights and overviews on the dynamics of innate immunity in plant defence.
\nPTI (formerly called basal or horizontal disease resistance) is the first facet of active plant defence and can be considered as the primary driving force of plant-microbe interactions [19]. As discussed before, PTI involves the recognition of conserved, indispensable microbial elicitors known as PAMPs by PRRs of either the receptor-like kinase (RLK) or receptor-like proteins (RLPs) families, which are membranous bound extracellular receptors. RLPs resemble the extracellular domains of RLKs, but lack the cytosolic signalling domain, whereas RLKs have both extracellular and intracellular kinase domains [6]. Instances of hetero-oligomeric complexes between RLKs and RLPs have been reported to occur, and to complement each other in PAMP detection [8], as will be discussed in the following sections. Examples of RLPs include the S locus glycoprotein (
PAMPs occur throughout the pathogen classes, including bacterial flagellin (
Flagellin constitutes the main building block of bacterial flagellum, and is so far the best characterized PAMP in plants. A 22 amino acid (
The signalling events triggered in plant cells following
Elongation factor Tu (EF-Tu) is the most abundant bacterial protein originally isolated from
The mechanism of
Notwithstanding the
Chitin, a homopolymer of β-(1,4)-linked N-acetylglucosamine (GlcNAc) unit, is a major constituent of fungal cell walls and is a classical PAMP [17]. Chitin is an ideal point of attack during plant defence responses since glucosamine polymers are not found in plants. Upon pathogen contact with the host, plant chitinases (hydrolytic enzymes) break down microbial chitin polymers. Interestingly, different plants have evolved mechanisms that employ common factors for chitin perception, and this could be probably the reason for the evolution of pathogen counter measures, e.g., in the biotrophic fungal pathogen
The first chitin-binding PRR was identified in rice as the
Fungal xylanases also function as fungal PAMPs by eliciting defence responses and promoting necrosis [50, 51]. In tomato, ethylene-inducing xylanases (
Other PRRs that have been identified in plants in response to fungal PAMPs include the
Wheat and Arabidopsis
Taken together, the identification of several potential host plant receptor targets and receptor complexes, and their stability across plant species and in the field will greatly help to improve plant protection. Moreover, identification of several potential microbial molecules that act as PAMPs would increase chances of identifying more potential host plant PRRs for developing crops with higher resistance or inducible resistance.
\nAlthough viral patterns inducing PTI are well known from animal systems, there is no similar pattern reported for plants [48]. Instead, plant resistance to viruses is mediated by post-transcriptional gene silencing of viral RNA or ETI. Nevertheless, infection by compatible viruses can also induce defence responses similar to PTI. Typical PTI cellular responses in plant-virus interactions include ion fluxes, ROS production, ethylene, salicylic acid (SA), MAPK signalling and callose deposition, for review see [65]. Commonly reported genes associated with PRRs in response to viruses include
Recent reviews have also suggested that the ribonuclease III-type DICER-like (DCL) enzymes could be acting as PRRs perceiving viral nucleic acids and triggering immune responses equivalent to the zig-zag model first layer [66]. The virus-derived molecules (e.g., dsRNAs) act as PAMPs, which trigger PTI and RNA interference (RNAi). However, PTI is typically a form of innate immunity, whereas RNAi induces a form of adaptive immunity. Thus, it is clear that a lot remains to be discovered to prove that virus-derived molecules trigger PTI.
\nMolecular recognition via ligand-receptor binding phenomena is increasingly becoming important in insect-plant interactions [69]. As reported earlier, the concept of PAMPS has been expanded to include herbivore-associated molecular patterns or damaged-self compounds produced after insect attack [70]. HAMPs isolated and characterized to date include components found in insect oral secretions (proteins, fatty acid-amino acid conjugates (FACs), sulphur-containing fatty acids, as well as plant-derived molecules generated following insect herbivory, including degradation products of ATP synthase and cell walls [71, 72]. The insect oral secretion molecules are released by chewing insects and have been reported to induce ion imbalances, variations in membrane potential, changes in Ca2+ fluxes and the generation of reactive oxygen species (ROS), which stimulate downstream signalling events in plants [73]. Ca2+ influx is obviously preceded by the opening of calcium channels, and it is likely that these channels are associated with plant receptors tuned to insect elicitors. Recently, a mechanism similar to PTI was reported in Arabidopsis in which LRR-RK
Another mechanism that is closely related to the PAMP receptors in plant resistance to insects is the
This notwithstanding, the insect HAMP-receptor binding phenomenon that allows plants to detect insects still remains less clear as to whether these responses are exclusively due to the specific perception of herbivores or due to different damage patterns or both.
\nAs discussed before, plants can also sense self-molecules called damage-associated molecular patterns that are available for recognition only after cell/tissue damage. The striking similarities of DAMP perception in animals and plants have been reviewed [83]. A perfect example that was discussed earlier is the
Cell wall components derived from the enzymatic activity of highly specific microbial homogalacturonan (HGA) is another good example of DAMPs [87]. The enhanced production of oligogalacturonic acid (OGA) fragments from plant cell walls potentially acts as DAMP, which are perceived by receptors such as
ETI (formerly called
In Arabidopsis, the CNLs functionally interact with the glycosylphosphatidylinositol (GPI) anchored protein—
Regardless of the NLR class, NB-ARC domain is the core nucleotide-binding fold in NB-LRR proteins. Four distinct subdomains constitute the NB-ARC domain, including nucleotide-binding (NB) fold and
NLRs maintain an ADP-binding inactive state in the absence of effectors. The binding of effectors induces conformational changes in NLRs, which allow ADP/ATP exchange. Consequently, the exchange of nucleotides triggers a second conformational change that activates the NB-LRRs’ N-terminus (TIR or CC) to interact with and trigger downstream target processes [102]. However, there is no substantial evidence on direct NLR-effector interaction that underlies resistance specificity in the NLR-effector combinations, apart from the yeast two-hybrid (Y2H) and
Together, the different R proteins have functional domains that can occupy different positions in NLRs. The functional domain positioning differences could be the reason behind several R genes that have been identified in plants. For instance, in rice more than 100 NLRs encoding genes have been described to confer resistance to strains of
During indirect recognition, the NLR guards the host protein by recognizing (monitoring) the modifications caused by the pathogen effector on the guarded protein [10]. The guarded protein can either be the actual effector virulence target or a decoy inviting modification by the pathogen. An example of the indirect recognition of effectors by NLRs was demonstrated in the conserved Arabidopsis protein
The functioning of NLRs as genetically tightly linked pairs to deliver disease resistance was also recently reported [115]. Moreover, Williams et al. [116] demonstrated, by coupling crystal structure and functional analyses, that
Most NLRs respond to the presence of proteins (effectors) delivered by adapted pathogens/parasites. Using suppressor screens, Gabriels et al. [117], identified
The downstream components of ETI signalling events partially overlap with PTI response, including activation of
Another example supporting our understanding of the NLR nuclear activity is the interaction of N immune receptor with the TF
Plant defence against pathogen/herbivore attack involves many signal transduction pathways that are mediated by a network of phytohormones. Phytohormones also play a critical role in regulating plant growth and development. Three most reported plant defence response phytohormones against pathogens/insects include salicylic acid (SA), jasmonic acid (JA) and ethylene (ET) [125]. Salicylic acid, a benzoic acid derivative, is an extensively studied important phytohormone in the regulation of plant defence [13]. In Arabidopsis, activation of the SA pathway has been shown to be important in both basal and R gene mediated biotrophic and hemibiotrophic pathogen defence [126, 127]. As discussed before,
In response to insect attack, SA regulates plant defence signalling against aphids by modulating the activity of
SA also interacts with other phytohormones either synergistically or antagonistically [137–138]. There is an obvious cross-talk between JA and SA signalling pathways in pepper to control thionin synthesis as part of the PR response and other defence pathways [139]. Other synergistic examples include the treatment of
The negative crosstalk between SA and JA/ET pathways is probably modulated by
On the other hand, most ET dependent defenses are positively modulated by JA. The
Although ET has been shown to regulate plant defence responses against fungi and bacteria, ET is probably not essential in plant resistance against viruses. Recently, 1-aminocyclopropane-1- carboxylic acid (ACC) was shown to enhance
Other phytohormones, such as ABA, gibberellins (GBs), auxins, brassinosteroids and cytokinins (CKs), have recently emerged as defence regulators [158]. ABA, a sesquiterpene compound resulting from the cleavage of γ-carotene, regulates numerous developmental processes and adaptive stress responses in plants. ABA can positively regulate plant defence at the early stages of infection by mediating stomatal closure against invaders, or inducing callose deposition if the pathogen evades the first line of defence [159]. If activated at later stages, ABA can suppress ROS induction and SA or JA signal transduction, thereby negating defences controlled by these two pathways [160].
\nCytokinins promote cell division, and are known to play a role in the synthesis and maintenance of chlorophyll and chloroplast development and metabolism. CKs are also involved in the modulation of defence mechanisms, including the induction of resistance against viruses [161, 162], but are known to suppress HR [163]. Cytokinins can however act synergistically with SA signalling [164]. CKs activate the transcriptional regulator
Brassinosteroids (BRs) are a class of polyhydroxysteroids that affect many cellular processes including elongation, proliferation, differentiation, membrane polarization and proton pumping [171]. BRs are increasingly becoming important in plant defence against pathogens. The mechanism underlying BR signalling involves the direct binding of BRs such as BL and castasterone to the LRR-RLK (
Taken together, the intricate cross-talk among hormones to cooperate with other signals and to coordinate appropriate induction of defences against pathogens and/or insect pests depends on the pathogen type, physiological stage and environmental and probably circadian regulations.
\nRNA interference or silencing is one of the emergent crop improvement strategies that involve sequence-specific gene regulation by small non-coding RNAs, which mainly belong to two categories, i.e., small interfering RNA (siRNA) and microRNA (miRNA). Though these sRNAs differ in biogenesis [179], both regulate the target gene repression through ribonucleoprotein silencing complexes. Plant RNA silencing involves four basic steps, which include introduction of double-stranded RNA (dsRNA) into the cell, processing of dsRNA into 18–25-nt small RNA (sRNA), sRNA 2-O-methylation and sRNA incorporation into effector complexes that interact with target RNA or DNA [180]. The formation of RNA-induced silencing complex (
Several RNAi strategies have shown success in plant improvement against biotic stresses. Arabidopsis
RNAi in plant resistance to fungi has also shown promise. For instance, RNAi-mediated suppression of a rice gene
In response to virus infection, several cases have shown successful crop improvement. For instance, resistance to
In functional biology studies, virus-induced gene silencing (VIGS) has emerged to be one of the most powerful RNA-mediated post-transcriptional gene silencing (PTGS), not only in plant protection against viruses, but also for gene knockouts in functional genomic studies [195, 196].
\nAlthough RNAi has the potential to contribute to increased crop productivity, by generating crops with improved resistance against pests and diseases, it would be even better if interaction between sRNAs and their targets is validated in several backgrounds. This would provide valuable insight into mechanisms of post-transcriptional gene regulation and multiple molecular pathways controlling plant stress responses. However, the danger of unintentional silencing of genes with regions of homology to the intended target, and target mutations leading to easier escape from miRNA-directed silencing are still ethical issues. Certain biosafety concerns on the use of RNAi transgenics, especially transcriptional gene silencing by chromatin modification is even a more sensitive and contentious issue, as it is rumoured to lead to hereditary changes associated with adverse effects. Thus, the underlying mechanisms associated with RNAi require further investigations using well-controlled experiments.
\nConventional breeding methods still play an important role in the selection of new varieties. However, emerging tools in biotechnology are much needed to maximize the probability of success. One area of biotechnology, molecular marker assisted breeding (MAB), has already made significant impact in improving efficiency of conventional breeding. There are, however, major gaps in the improvement of traits controlled by a large number of small effects, epistatic QTLs displaying significant genotype × environment (G × E) interactions. Thus, accurate indirect selections based on genomic tools that have emerged over the last few decades are continuously being employed to improve the breeding efficiency for such traits. The advantage is that, to date, the genome sequences for more than 55 plant species have been produced and many more are being sequenced [197]. The genome sequence information available enables the identification and development of genomewide markers. Availability of markers covering the whole genomic regions has already shown promise in the development of special populations, such as recombinant inbred lines (RILs), near isogenic lines (NILs), introgression lines (ILs) or chromosome segment substitution lines (CSSLs). Recently, heterogeneous inbred family (HIFs) and multi-parent advanced generation inter-cross (MAGIC) populations, which can serve the dual purpose of permanent mapping populations for precise QTL mapping and for direct or indirect use in variety development, have shown promise in plant breeding. Also, genomewide association (GWA) analysis has been successfully applied to rice, maize, barley, wheat, sesame and other plants. GWA has also been adapted to the “breeding by design” approach, often referred to as genome selection (Figure 2), which predicts the outcome of a set of crosses on the basis of molecular markers information.
\nPrinciple of genomic selection. Two steps are involved; developing a training population to provide phenotypic and genotypic data; effects are estimated for all molecular markers. The second step involves genotyping untested populations and selecting superior genotypes based on their expected phenotypes according to the estimates obtained from the marker effects on the training population (bottom).
Recently, a combination of different approaches has been used to develop new rice cultivars referred to as ‘Green Super Rice’, possessing resistance to multiple insects and diseases, high nutrient efficiency and drought resistance. If fully exploited, the integration of a similar approach with breeding by design or genome selection would help to design new plant types with not only a few selected major loci, but nearly all the functional loci of the genome controlling key desirable traits in commercial cultivars.
\nExpression studies also present a major area of interest for breeders. Among them, the NGS technologies have become the mainstay of studying complex traits, as direct sequencing of genomes and comparison with reference sequences is increasingly becoming more feasible. Re-sequencing has been performed for model species, e.g.,
Supportive omic tools for increasing plant breeding efficiency against biotic stresses. Sky blue lines indicate interactions; largest bold black lines indicate epigenetic regulation; red lines indicate regulation; and blue line indicates metabolic reactions.
The recent advent of genotyping by sequencing (GBS) approach that minimizes ascertainment biases and the need for prior genome sequence information associated with traditional techniques has also enabled single nucleotide polymorphism marker detection, exposition of QTLs and the discovery of candidate genes controlling stress tolerance. Thus, genome/transcript profiling when combined with genome variation analysis is a potential area which could prove useful for breeders in the near future [205, 209]. Another newly developed approach, which combines genetical genomics and bulk segregant analysis (BSA) to identify markers linked to genes, shows the possibility of coupling BSA to high throughput sequencing methods. Although there are shortcomings, including errors introduced during NGS procedures, this method has proven to be useful in identifying stress tolerance genomic regions in crop plants. A more recent modification that exploits the power of deep sequencing of target-enriched SNP markers to increase the efficiency of BSA analysis is called target-enriched TEX-QTL mapping [197]. The authors propose that by combining a large F2 population size, deeply sequenced markers, and 10–20% bulk size, most QTLs can be identified within two generations. Although it does not currently detect very closely linked QTL, TEX-QTL method is potentially a useful development in plant breeding. It is envisaged that BSA, by genotyping pooled-segregant sequencing, is likely to increase the reliability and reduce the time required to map all QTL defining the trait of interest and to identify causative superior alleles that can subsequently be used for crop improvement by targeted genetic engineering.
\nDesirable alleles are also being identified using functional genomic tools, including transformation, insertional mutagenesis, RNAi, the screening of either mutant or natural germplasm collections by means of targeting induced local lesions in genomes (TILLING) or ecotype TILLING (EcoTILLING) methodologies. These strategies enable plant scientists to predict gene functions and allow efficient prediction of the phenotype associated with a given gene, the so-called reverse genetics approach. The availability of a large volume of sequences generated through NGS technologies is significantly increasing the number and quality of candidates for TILLING and EcoTILLING studies. Thus, a number of crops have benefited from these technologies, including Arabidopsis, lotus, barley, maize, pea, melon and rice, for review see [198].
\nThe use of improved recombinant DNA techniques to introduce new traits in early phases of cultivar selection is also currently gaining momentum in plant biology. Techniques such as oligonucleotide-directed mutagenesis (oDM) as well as those based on zinc finger nuclease (ZFN), transcription activator-like effector nuclease (TALeN) and clustered regularly interspaced short palindromic repeat (CRISPR)/CRISPR-associated protein 9 (Cas9) system are all capable of specifically modifying a given target sequence leading to genotypes not substantially different from those obtained through traditional mutagenesis. The practical use of these techniques in developing countries and the performance of the germplasm developed through them under environmental conditions [206, 207, 208] is yet to be fully demonstrated.
\nPlant resistance to biotic stresses is jointly controlled by the plants’ anatomy, physiology, biochemistry, genetics, development and evolution. Efforts to understand these mechanisms have generated a lot of data on candidate genes, quantitative trait loci (QTLs), proteins and metabolites associated with plant defences. This chapter has reviewed most of these aspects to provide a reader with background information on the diverse plant defence patterns. Some of the genes and methods that hold promise for improving plant defences are also discussed. Certainly, plant-pathogen/insect interaction is a complex phenomenon that involves various signalling pathways tracking and regulating the pathogens/insect ingress. The interactions leading to effective defence apparently involve activation of both innate and systemic acquired resistance, and require both direct and indirect pathways to rapidly limit the entry or proliferation of biotic agents in the plant. Identifying and harmonizing an efficient defence signalling pathway, which leads to activation of an effective defence strategy, is still a challenge, considering the large number of genes and proteins often expressed in most plant-pathogen/insect interaction studies. However, there are some resistance components that have shown promise, although further studies would be necessary to clarify the signalling patterns in which such components are involved. Important examples include LRR-RK
The rhesus monkey (
Rhesus monkeys are commonly used in toxicity studies and play a pivotal role in unraveling the mechanisms of health and diseases and during the development of vaccines. HIV, SARS and Covid-19 are a few examples of viral diseases that are studied in the rhesus monkey. In addition to investigations that require that the physiology of this laboratory animal parallels that of man, studies that demand a comparable anatomy are multiple as well. Examples include studies on osteoporosis, osteopenia, lordosis and kyphosis [1].
The aim of this book chapter is to provide the biomedical researcher, who studies and/or uses the rhesus monkey, with the essentials of its anatomy. Although this chapter is rather elaborate, not all the details of the rhesus monkey anatomy can be described. Where appropriate, emphasis is put on those structures that have importance during manipulations of the animal under investigation, such as the muscles that allow for intramuscular injection and the veins that can be punctured to draw blood or inject substances intravenously. Researchers can be referred to two anatomical atlases for further reading. These include the work by Hartman and Straus Jr. from 1933, entitled
The rhesus monkey exhibits pronounced sex differentiation (Figure 1). Females measure approximately 47 cm in length (crown-rump length, thus without tail) and weigh 5–8 kg, whereas males present values of 53 cm and 8–15 kg, respectively [6, 7]. They have a relatively short, nonprehensile tail. As the rhesus monkey is a despotic species, fights often occur related to their hierarchical rank order system causing severe tail wounds all resulting in the veterinarian’s decision to amputate the injured tail.
External appearance of the male (A) and female (B) rhesus monkey. Notice the twins suckling their mother.
The hairs on the lateral sides of the animal are gray to brown. The inside of the arms and legs, and the belly color pale beige to white. Each finger and toe, five on each hand and foot, possesses a nail (unguis). The palms of the hands and the soles of the feet are keratinized showing epidermal ridges [7]. The face, including the ears, has very few hairs and therefore a pinkish appearance. Females possess a pair of pectoral mammary glands.
The skin covering and surrounding the genitals is also devoid of hairs. In males, the scrotum is non-pendulous and contains a pair of testes that measure 4 cm in length [8]. The penis is normally retracted within the preputium (Figure 2), only extracted during mating.
External genital organs of the male rhesus monkey with the penis retracted into the preputium.
Menarche occurs at about 3 years of age and the length of the menstrual cycle is 28 days. The gestation length is around 165 days. Rhesus monkeys are seasonal breeders. Menstrual bleeding (menses) lasts for about 4 days. During the mating season (autumn-early winter), the skin of the face and genitals of females becomes characteristically red and/or swollen (Figures 3 and 4) during the period of regular cycles (sex skin coloration). These periodic changes in sex skin coloration are not valid indicators of either ovulation or menstruation. The sex skin is a secondary sex characteristic and reflects estrogenic activity. It fluctuates, as a rule, as to presence, extent, and time of year in a very unpredictable manner. In older females, the sex skin is less pronounced, and the redness may persist for longer intervals. Moreover, sex color is maintained during the entire gestational period and for several weeks after parturition: females who become pregnant during the mating season do not show the significant sex skin coloration decrease seen in nonpregnant females during the months that follow the mating season. Environmental cues, perhaps acting on a seasonal biological clock rather than social factors, are thought to be mainly responsible for the seasonal fluctuations observed. Sex skin involves the skin of the buttocks, hips, and base of tail, but the coloration and swelling can even spread in red splotches down the legs and over the calves to the heel; and there might also be a forward-tapering streak of red splotches from the symphysis to the umbilicus. Females could use color as a gauge to monitor other females’ reproductive status or cyclic phase, for competitive purposes, as hindquarter color can advertise the relative timing of ovulation. The possibility might not be plausible for facial color, given that the relationship between face color and cyclic phase is not predictable in rhesus monkeys.
Two examples of sex skin (coloration and swelling) in the face of females.
Four examples of sex skin coloration and swelling on the buttocks, hips, legs and base of tail in females.
In females, the vulva is pronounced, with a large visible clitoris between the sciatic protuberances that are covered with keratinized skin patches (callositas ischii/sciatic protuberances), which is typical for Old World monkeys, both males and females (Figure 5).
(A) Perineum of a female rhesus monkey. This female is presented with a tail stump (1) that is visible just dorsal to the anal opening (2). The large clitoris (3) is present in between the sciatic protuberances (4). (B) This female has an intact tail (1) just dorsal to the anal opening (2). The clitoris (3) is less pronounced but still visible in between the sciatic protuberances (4). The prudential labia (5) can however, more readily be recognized in the female.
The general build of the skeleton of the rhesus monkey is illustrated in Figure 6. The skull is large and heavy compared to the slender body. This contrasts with the sturdy external appearance of the rhesus monkey, as depicted in Figure 1, which suggests that this species has a well-developed musculature.
Skeleton of a female rhesus monkey. 1: cranium, 2: mandibula, 3: vertebrae cervicales, 4: scapula, 5: clavicula, 6: humerus, 7: radius, 8: ulna, 9: manus, 10: vertebrae thoracales, 11: sternum, 12: arcus costalis, 13: vertebrae lumbales, 14: sacrum, 15: pelvis, 16: femur, 17: patella, 18: tibia, 19: fibula, 20: pes, 21: vertebrae caudales.
The skull including the mandible of an adult male rhesus monkey is depicted in Figure 7. Some major anatomical landmarks are indicated. The splanchnocranium is relatively large but presents a reduced length. The very large conical orbits are almost completely postorbitally closed. The neurocranium is situated caudal to the former. It contains the cranial cavity that harbors the brains. The mandible and in particular its body is relatively large. A prominent mandibular angle can be seen. The symphysis between the left and right mandibles is synostotic.
Left lateral view of the skull of an adult male rhesus monkey. The splanchnocranium and neurocranium are shaded in red and green, respectively. 1: orbita, 2: canalis lacrimalis, 3: foramen infraorbitale, 4: foramen zygomaticofaciale, 5: os nasale, 6: os incisivum, 7: maxilla, 8: os frontale, 9: os parietale, 10: arcus zygomaticus, 11: fossa temporalis, 12: porus acusticus externus, 13: processus styloideus, 14: crista nuchae, 15: linea temporalis, 16: planum nuchale, 17: foramen magnum. The mandible is shaded in purple. 18: angulus mandibulae, 19: processus condylaris, 20: processus coronoideus, 21: foramen mentale.
The hyoid bone of the rhesus monkey (Figure 8) is not directly connected to the skull. It consists of a body (corpus) and a bilaterally present pair of horns that lie caudally. The lesser horn (cornu minus) is, however, fused with the greater horn (cornu majus). The latter horns are joined with the body by means of cartilage.
Dorsal view of the hyoid bone. The large corpus (1) is caudally elongated by the bilateral cornu minus (2) and the bilateral cornu majus (3) that are fused.
The vertebral column consists of 7 cervical vertebrae, 12 thoracic vertebrae, 7 lumbar vertebrae, 3 fused sacral vertebrae and around 19 caudal vertebrae. This number is variable. The fifth, sixth and seventh caudal vertebrae possess a hemal arch that encloses the caudal artery and vein. The number of rib pairs equals the number of thoracic vertebrae, i.e. 12. Consequently, the rhesus monkey presents 24 ribs in total. These are connected to the sternum, which is composed of 7 sternebrae, by means of costal cartilages. The manubrium is the first sternebra to which not only the first pair of ribs is connected, but also the bilaterally present clavicle (Figure 9). This bone connects the sternum with the thoracic limb through its junction with the acromion of the shoulder blade.
Dorsal view of the sternum. 1: manubrium sterni, 2: corpus sterni, 3: sternebra, 4: processus xyphoideus, 5: incisura clavicularis, 6: incisura costalis, 7: clavicula.
The thoracic limb, which is connected with the thorax by means of the clavicle, is composed of the shoulder blade or scapula (Figure 10), the humerus (Figure 11), the medially located radius (Figure 12) and the laterally located ulna (Figure 13) that are unfused, and the hand (Figure 14). The hand contains five fingers that are each composed of 3 phalanges, except the first, called the pollex, that lacks the middle phalanx.
Lateral view of the right scapula. 1: margo dorsalis, 2: margo caudalis, 3: margo cranialis, 4: angulus cranialis, 5: angulus caudalis, 6: angulus ventralis, 7: spina scapulae, 8: fossa infraspinata, 9: fossa supraspinata, 10: acromium, 11: facies articularis clavicularis, 12: collum scapulae, 13: incisura scapulae, 14: cavitas glenoidalis, 15: tuberculum supraglenoidale, 16: tuberculum infraglenoidale, 17: processus coracoideus.
Cranial (A) and caudal (B) views of the right humerus. 1: epiphysis proximalis or extremitas proximalis, 2: diaphysis or corpus humeri, 3: epiphysis distalis or extremitas distalis, 4: caput humeri, 5: collum humeri, 6: tuberculum majus, 7: tuberculum minus, 8: crista tuberculi minoris, 9: crista tuberculi majoris, 10: sulcus intertubercularis, 11: tuberositas deltoidea, 12: epicondylus lateralis, 13: epicondylus medialis, 14: fossa radialis, 15: fossa coronoidea, 16: trochlea humeri, 17: capitulum humeri, 18: fossa olecrani, 19: sulcus nervi radialis.
Cranial (A) and caudal (B) views of the right radius. 1: epiphysis proximalis or extremitas proximalis, 2: diaphysis or corpus radii, 3: epiphysis distalis or extremitas distalis, 4: caput radii, 5: fovea articularis, 6: collum radii, 7: tuberositas radii, 8: processus styloideus radii, 9: facies articularis carpalis, 10: tuberositas pronatoria, 11: incisura ulnaris.
Cranial (A) and caudal (B) views of the right ulna. 1: epiphysis proximalis or extremitas proximalis, 2: diaphysis or corpus ulnae, 3: epiphysis distalis or extremitas distalis, 4: olecranon with tuber olecrani, 5: incisura trochlearis with processus anconeus, 6: processus coronoideus medialis, 7: processus coronoideus lateralis, 8: tuberositas ulnae, 9: crista musculi supinatorii, 10: caput ulnae, 11: facies articularis, 12: processus styloideus ulnae.
Dorsal view of the skeleton of the right hand. 1: os carpi radiale (os scaphoideum), 2: os carpi intermedium (os lunatum), 3: os carpi ulnare (os triquetrum), 4: os carpi accessorium (os pisiforme), 5: os carpi Centrale, 6: os carpale primum (os trapezium), 7: os carpale secundum (os trapezoideum), 8: os carpale tertium (os capitatum), 9: os carpale quartum (os hamatum), 10: os sesamoideum m. abductoris digiti primi (pollicis), 11: os metacarpale primum, 12: os metacarpale secundum, 13: os metacarpale tertium, 14: os metacarpale quartum, 15: os metacarpale quintum, 16: Phalanx proximalis, 17: phalanx media, 18: phalanx distalis.
The pelvic limb connects to the body through the pelvis that consists of the fused left and right pelvic bones (Figures 15 and 16). The symphysis between these bones is synostotic. The femoral bone or femur presents a distal trochlea for the ovoid patella. Both femoral condyles, which each support a sesamoid bone on their caudoproximal aspects, articulate with the tibial plateau (Figure 17). The tibia (Figure 18) lies medial to the slender fibula (Figure 19). The foot (Figure 20) contains five toes that are each composed of 3 phalanges, except the first, called the hallux, that lacks the middle phalanx.
Dorsal (A) and ventral (B) views of the pelvis. 1: acetabulum, 2: ossa pubicae, 3: cavum pelvis, 4: foramen obturatum, 5: ramus cranialis ossis pubis, 6: ramus caudalis ossis pubis, 7: symphysis pubica, 8: tuberculum pubicum ventrale, 9: crista pubica, 10: pecten ossis pubis, 11: eminentia iliopubica, 12: corpus ossis ischii, 13: tabula ossis ischii, 14: ramus ossis ischii, 15: symphysis ischiadica, 16: tuber ischiadicum, 17: arcus ischiadicus, 18: spina ischiadica, 19: incisura ischiadica minor, 20: corpus ossis ilii, 21: ala ossis ilii, 22: facies sacropelvina, 23: incisura ischiadica major, 24: sacrum; 7+15 = symphysis pelvina.
Lateral view of the left os coxae. 1: acetabulum, 2: fossa acetabuli, 3: facies lunata, 4: incisura acetabuli, 5: corpus ossis pubis, 6: ramus cranialis ossis pubis, 7: ramus caudalis ossis pubis, 8: foramen obturatum, 9: symphysis pubica, 10: tuberculum pubicum ventrale, 11: pecten ossis pubis, 12: eminentia iliopubica, 13: crista pubica, 14: corpus ossis ilii, 15: ala ossis ilii, 16: facies sacropelvina, 17: facies glutea, 18: crista iliaca, 19: tuber sacrale or spina iliaca dorsalis, 20: spina iliaca dorsalis cranialis, 21: spina iliaca dorsalis caudalis, 22: incisura ischiadica major, 23: tuber coxae or spina iliaca ventralis, 24: spina iliaca ventralis cranialis, 25: spina iliaca ventralis caudalis.
Cranial (A) and caudal (B) views of the right femur. 1: epiphysis proximalis or extremitas proximalis, 2: diafysis or corpus femoris, 3: epiphysis distalis or extremitas distalis, 4: caput ossis femoris, 5: fovea capitis, 6: collum ossis femoris, 7: trochanter major, 8: fossa trochanterica, 9: trochanter minor, 10: crista intertrochanterica, 11: epicondylus lateralis, 12: epicondylus medialis, 13: condylus lateralis, 14: condylus medialis, 15: trochlea ossis femoris, 16: fossa intercondylaris, 17: facies articularis sesamoidea (lateralis et medialis), 18: fossa m. poplitei.
Cranial (A) and caudal (B) views of the right tibia. 1: epiphysis proximalis or extremitas proximalis, 2: diaphysis or corpus tibiae, 3: epiphysis distalis or extremitas distalis, 4: condylus medialis, 5: condylus lateralis, 6: facies articularis fibularis, 7: tuberositas tibiae, 8: facies articularis proximalis, 9: eminentia intercondylaris, 10: tuberculum intercondylare laterale et mediale, 11: crista tibiae, 12: linea muscularis, 13: malleolus medialis, 14: facies articularis distalis, 15: cochlea tibiae, 16: incisura fibularis.
Lateral (A) and medial (B) views of the right fibula. 1: epiphysis proximalis or extremitas proximalis, 2: diaphysis or corpus fibulae, 3: epiphysis distalis or extremitas distalis, 4: caput fibulae, 5: facies articularis capitis fibulae, 6: malleolus lateralis, 7: facies articularis malleoli.
Dorsal view of the skeleton of the right foot. 1: talus, 2: calcaneus, 3: os tarsi centrale (os naviculare), 4: os tarsale primum (os cuneiforme mediale), 5: os tarsale secundum (os cuneiforme intermedium), 6: os tarsale tertium (os cuneiforme laterale), 7: os tarsale quartum (os cuboideum), 8: os sesamoideum, 9: os metatarsale primum, 10: os metatarsale secundum, 11: os metatarsale tertium, 12: os metatarsale quartum, 13: os metatarsale quintum, 14: phalanx proximalis, 15: phalanx media, 16: phalanx distalis.
The various bones of which the skull is composed of are connected by means of sutures that ossify during puberty. As mentioned earlier, the symphysis mandibulae is synostotic. The mandibular joint between the mandible and the skull presents a cartilaginous disc that eliminates the incongruence between the mandibular fossa and the condylar process (Figure 21).
Left mandibular joint formed between the cranium (1) and the mandibula (2). More specifically, the articulation is present between the fossa mandibularis (3), caudally bordered by the processus styloideus (4), and the processus coronoideus (5). The discus articularis (6), of which a higher magnification is shown in the insert, is located in between these structures.
The atlanto-occipital joint between the occipital condyles of the skull and the cranial articulating foveae of the atlas (first cervical vertebra) is dorsally covered by the atlanto-occipital membrane. The bilateral articulations are laterally reinforced by the lateral ligaments.
The atlanto-axial joint has three important ligaments. The transverse ligament covers the dens axis. From this dens, the longitudinal dental ligament runs to the ventral edge of the foramen magnum. The alar ligaments connect the dens with the lateral edges of the foramen magnum.
The individual vertebrae, from the third cervical vertebra to the sacrum, are joined together with multiple ligaments and bands (Figure 22). The supraspinal ligament is the continuation of the nuchal ligament that connects the external occipital protuberance on the skull with the spinal processes of the 3rd tot 7th cervical vertebrae. The dorsal longitudinal ligament that lies immediately dorsal to the vertebral bodies, up to the sacrum, is the continuation of the tectorial membrane that covers the several ligaments of the atlanto-axial joint.
Right lateral view of four thoracic vertebrae with their associated ligaments and ribs. The cranial rib has been removed entirely while the other ribs are cut proximally. 1: discus intervertebralis, 2: ligamentum longitudinale ventrale, 3: ligamentum supraspinale, 4: ligamenta interspinalia, 5: ligamentum interarcuale, 6: ligamenta intertransversaria, 7: processus spinosus, 8: processus spinosus, 9: caput costae, 10: tuberculum costae, 11: ligamentum costotransversarium laterale, 12: ligamentum costotransversarium craniale, 13: ligamenta radiata.
The ribs have three contact points with the thoracic vertebrae. The costal head articulates with the caudal fovea of the cranial thoracic vertebra (or the 7th cervical vertebra in the case of the first rib) and the cranial fovea of the caudal thoracic vertebra. An additional attachment is present between the costal tubercle and the transverse process of the thoracic vertebra, which number equals that of the rib (e.g., thoracic vertebra number 3 bears rib pair number 3). Ribs 11 and 12 lack the typical articulations as they have no costal tubercle.
The front limb is not only connected to the thorax by means of a synsarcosis (connecting muscles) but also by means of the collar bone that attaches to the manubrium of the sternum, and the acromion and coracoid process of the shoulder blade. The coracoclavicular ligament is worth mentioning.
The shoulder joint between the shoulder blade and the humerus is characteristic in that the glenoid cavity of the scapula is narrower than the humeral head. Therefore, a glenoid labrum is present at the rims of the glenoid cavity. The coracohumeral ligament has its origin on the coracoid process of the scapula and inserts into the articular capsule. No collateral ligaments can be observed.
The elbow joint is formed by the humerus, radius and ulna. As such, a humeroradial and a proximal radioulnar articulation are present. The lateral collateral band originates at the lateral epicondyle of the humerus and attaches to the ulna (lateral coronoid process). It is therefore called the ulnar collateral ligament. The radial collateral ligament can be found between the medial humeral epicondyle and the radius (radial head) and ulna (medial coronoid process). The radial annular ligament attaches to both coronoid processes and encloses the radial head. In between the radius and ulna, the interosseous membrane can be seen. The distal radioulnar joint has a firm joint capsule that keeps both bones together.
The wrist or carpus/carpal joint is very complex. Numerous ligaments connect the several bones. These ligaments can be grouped into antebrachiocarpal (radiocarpal and ulnocarpal), intercarpal and carpometacarpal ligaments. The metacarpal bones are proximally connected to each other by means of the palmar metacarpal ligaments.
Metacarpophalangeal, proximal interphalangeal and distal interphalangeal joints are the several articulations that can be found in the fingers. The pollex only shows a single interphalangeal joint. Lateral and medial collateral bands connect the phalanges to each other and to the respective metacarpal bones.
The hip joint is formed between the acetabulum of the pelvic bone and the femoral head. The ligament of the femoral head is stretched between these structures. Since the acetabulum is rather shallow compared to the pronounced femoral head, its rim is provided by a cartilaginous labrum (Figure 23). No collateral bands are present.
Ventral view of the right hip joint. 1: acetabulum, 2: caput femoris, 3: labrum acetabulare, 4: incisura acetabuli, 5: ligamentum transversum acetabuli, 6: ligamentum capitis ossis femoris, 7: fovea capitis.
The knee joint is complex. It is composed of the femoropatellar, femorotibial and tibiofibular articulations. The ovoid patella bears a single straight patellar ligament that inserts on the tibial tuberosity. The incongruence between the femoral condyles and the tibial plateau is eliminated by the presence of C-shaped menisci. Both are cranially and caudally attached to the tibia by means of small meniscal ligaments. A cranial or lateral and a caudal or medial cruciate ligament can be observed between the femoral intercondylar fossa and the tibial intercondylar eminence. In addition, a meniscofemoral ligament or false cruciate ligament inserts on the caudal tip of the lateral meniscus. The lateral and medial collateral bands find their origins on the lateral and medial femoral epicondyles, respectively, and insert into the tibial epicondyle and fibular head, respectively (Figure 24).
View on the tibial plateau of the right limb. 1: meniscus medialis, 2: meniscus lateralis, 3: ligamentum meniscofemorale, 4: ligamentum cruciatum craniale, 5: ligamentum cruciatum caudale, 6: corpus adiposum infrapatellare, 7: ligamentum collaterale laterale.
The tarsal joint consists of the articulations between the tibia, the fibula, the several tarsal bones and the metatarsal bones (tarsocrural, proximal intertarsal, distal intertarsal and tarsometatarsal articulations). Numerous long and short ligaments connect the several bones. Long ligaments include the collateral ligaments and the long plantar ligament.
Metatarsophalangeal, proximal interphalangeal and distal interphalangeal joints are the several articulations that can be found in the toes. The hallux only shows a single interphalangeal joint. Lateral and medial collateral bands connect the phalanges to each other and to the respective metatarsal bones.
The superficial muscles that can be observed immediately after skinning the animal are illustrated in Figures 25 and 26, which are ventral, dorsal and left lateral views, respectively. Below, the musculature of the rhesus monkey is briefly described per region with emphasis on the origin and insertion of each muscle. Readers are referred to anatomical atlases [3, 9] for more details.
Superficial musculature. A: Ventral view with 1: m. pectoralis major, 2: m. pectoralis abdominalis, 3: m. latissimus dorsi, 4: m. obliquus externus abdominis, 5: m. rectus abdominis, 6: m. deltoideus, 7: m. biceps brachii caput longum, 8: m. biceps brachii caput breve, 9: m. triceps brachii caput mediale, 10: m. triceps brachii caput longum, 11: m. iliopsoas, 12: m. sartorius, 13: m. pectineus, 14: m. adductor longus, 15: m. gracilis, 16: m. semimembranosus, 17: m. rectus femoris, 18: m. vastus medialis. B: Dorsal view with 1: m. temporal, 2: m. masseter, 3a: m. trapezius pars cervicalis, 3b: m. trapezius pars thoracica, 4: m. latissimus dorsi, 5: fascia thoracodorsalis, 6: m. deltoideus, 7: m. biceps brachii caput longum, 8: m. triceps brachii caput laterale, 9: m. triceps brachii caput longum, 10: m. gluteus superficialis covered by the fascia glutea, 11: m. tensor fasciae latae, 12: Fascia lata, 13: m. biceps femoris, 14: m. gastrocnemius caput laterale.
Left lateral view of the superficial musculature. 1: m. frontalis, 2: m. orbitoauricularis, 3: m. auricularis dorsalis, 4: m. auricularis caudalis, 5: m. platysma, 6: m. masseter, 7a: m. trapezius pars cervicalis, 7b: m. trapezius pars thoracica, 8: m. latissimus dorsi, 9: fascia thoracodorsalis, 10: m. serratus ventralis, 11: m. obliquus externus abdominis, 12: m. obliquus internus abdominis, 13: m. pectoralis abdominalis, 14: Lamina externa vaginae m. recti abdominis, 15a: m. acromiodeltoideus, 15b: m. spinodeltoideus, 16a: m. triceps brachii caput laterale, 16b: m. triceps brachii caput longum, 16c: m. triceps brachii caput mediale, 17: m. biceps brachii, 18: fascia thoracolumbalis, 19: m. tensor fasciae latae, 20: m. gluteus superficialis, 21: fascia lata, 22: m. biceps femoris, 23: m. semitendinosus, 24: m. semimembranosus, 25: m. gastrocnemius caput laterale.
The facial muscles play a pivotal role in the facial expression and therefore the communication between animals [10, 11].
M. platysma: This very thin superficial muscle overlies the neck region and inserts into the m. caninus, m. orbicularis oris, m. depressor anguli oris, m. depressor labii inferioris and m. mentalis (Figure 26).
M. occipitalis: This cutaneous muscle lies superficial to the platysma muscle.
M. frontalis: This broad, thin muscle covers the forehead and inserts into the m. orbicularis oculi (Figure 26).
M. auricularis caudalis: This muscle finds its origin in the dorsal cervical region, medial to the occipital muscle. It bifurcates to insert bilaterally at the caudal aspect of the external acoustic meatus (Figure 26).
M. auricularis dorsalis: This muscle is wider and thinner than the former. It lies between the ears and inserts at the dorsal aspect of the external acoustic meatus (Figure 26).
M. orbitoauricularis: This inconsistent muscle runs from the lateral orbital angle to the rostral aspect of the external acoustic meatus (Figure 26).
M. orbicularis oculi: This muscle surrounds the orbit as a sphincter.
M. zygomaticus: The origin of this band-shaped muscle is the zygomatic arch, whereas the insertion is the lateral angle of the mouth.
M. levator labii superioris: It runs from the nasal and maxillary bones to the dorsal fibers of the orbicularis oris muscle.
M. levator labii alaeque nasi: This muscle lies medial to the former and presents fibers that insert into the nasal wings.
M. depressor anguli oris: This triangular muscle has insertions into the zygomatic and orbicularis oris muscles.
M. caninus: This muscle lies deep to the former. It can be found at the angles of the mouth that cover the canines.
M. orbicularis oris: This muscle surrounds the mouth opening as a sphincter.
M. depressor labii inferioris: This muscle that lies ventromedial to the depressor anguli oris muscle runs between the ventral aspect of the orbicularis oris muscle and the skin of the chin.
M. mentalis. This muscle covers the chin. It has insertions into the ventral aspect of the orbicularis oris muscle.
The muscles of mastification were studied after the facial musculature was removed.
M. masseter: The masseter originates from the zygomatic arch. It consists of a larger superficial and a smaller deep part that both insert into the mandible (Figures 25B, 26, and 27).
M. temporalis: This muscle fills the temporal fossa. Its fibers converge on the coronoid process of the mandible (Figures 26 and 27).
M. buccinator: The buccinator is a deep muscle that originates from the rostral part of the zygomatic arch and the maxilla. It is inserted into the mandible (Figure 27)
M. pterygoideus: The larger internal part arises from the pterygoid fossa and inserts into the mandibular angle. The smaller external part originates laterally on the pterygoid bone and inserts into the mandible at the level of the mandibular joint (Figure 27).
M. digastricus: The rostral and caudal bellies are separated by an intermediate tendon. The caudal belly attaches to the mastoid process while the rostral belly inserts into the rostroventral border of the mandible (Figure 27).
Ventrolateral view of the masticatory muscles and musculature of the ventral cervical region and tongue. 1a: m. masseter pars superficialis, 1b: m. masseter pars profunda, 2: m. temporalis, 3: m. buccinator, 4: m. pterygoideus, 5: m. digastricus venter caudalis, 6: m. sternomastoideus, 7: m. cleidomastoideus, 8: m. cleidooccipitalis, 9: m. levator scapulae cranialis, 10: m. trapezius pars cervicalis, 11: m. sternohyoideus, 12: m. sternothyroideus, 13: m. longus capitis, 14: m. longus colli, 15: m. mylohyoideus, 16: m. hyoglossus, 17: m. thyrohyoideus.
M. sternocleidomastoideus:\t\t
The lateral portion is the m. cleidooccipitalis that arises from the clavicle and inserts into the nuchal line of the skull (Figure 27).
The medial portion is the m. sternomastoideus that runs from the manubrium of the sternum to the mastoid process of the skull (Figure 27).
In between both muscles, the m. cleidomastoideus can be seen. It runs from the medial side of the clavicle to the mastoid process (Figure 27).
M. omohyoideus: This fusiform muscle originates from the cranial border of the scapula and inserts into the lateral aspect of the hyoid bone. It runs medial to the sternocleidomastoid muscle and lateral to the common carotid artery and vagosympathetic trunk.
M. sternohyoideus: This muscle finds its origin on the craniodorsal aspect of the manubrium sterni and inserts into the medial aspect of the hyoid bone. As a result, it covers the trachea in the ventral midline together with its contralateral counterpart (Figure 27).
M. sternothyroideus: This muscle has the same origin as the former but inserts into the thyroid cartilage. It lies medial to the common carotid artery and vagosympathetic trunk, and ventral to the trachea (Figure 27).
M. longus capitis: Both the major part (m. longus capitis major) and the minor part (m. longus capitis minor) insert into the basiocciput. The former arises from the ventral sides of the bodies of the 4th to 6th cervical vertebrae, while the latter has the atlas as its origo (Figure 27).
M. longus colli: This muscle lies deep against the ventral sides of all cervical and the first four thoracic vertebrae, dorsal to the trachea. The short muscle fibers interconnect the subsequent vertebrae (Figure 27).
M. mylohyoideus: This muscle originates from the medial surface of the mandibular body along its entire length and inserts into the median raphe of the tongue where it meets its counterpart (Figure 27).
M. hyoglossus: The hyoid bone is the origin of this muscle that inserts into the tongue (Figure 27).
M. thyrohyoideus: This muscle has its origin on the thyroid cartilage and inserts into the hyoid bone.
M. geniohyoideus: This muscle originates from the mandible at the caudal edge of the symphysis and travels caudally towards the hyoid bone.
M. splenius: This muscle is reduced in the rhesus monkey. It originates dorsally on the first three thoracic vertebrae and runs cranially towards the occiput.
M. complexus: This muscle arises from the transverse processes of the 3rd to 5th thoracic vertebrae and is inserted into the occipital bone below the nuchal crest near the median plane (Figure 28).
M. rectus capitis: The major part (m. rectus capitis major) and minor part (m. rectus capitis minor) arise from the crest of the axis and dorsal tubercle of the atlas, respectively. Both insert into the occipital bone (Figure 28).
M. obliquus capitis: The cranial part (m. obliquus capitis cranialis) runs from the wing of the atlas to the occiput. The caudal part (m. obliquus capitis cranialis) arises from the crest of the axis and inserts into the wing of the atlas.
M. trachelomastoideus: This muscle arises from the 2nd to 4th thoracic vertebrae and is inserted into the occipital bone and the mastoid process.
M. scalenus:\t\t
M. scalenus dorsalis (m. scalenus brevis posterior): The origin is laterocaudal to the ventral scalenus muscle. The insertion is into the transverse processes of all cervical vertebrae.
M. scalenus medius (m. scalenus longus): The origin is on the 3rd to 5th rib. The insertion is on the transverse process of the 4th cervical vertebra (Figure 30).
M. scalenus ventralis (m. scalenus brevis anterior): The origo can be found craniomedially on the first rib. The insertion is the transverse processes of the 3rd to 5th cervical vertebrae.
Musculature of the dorsal thoracocervical region. A: Superficial layer at the left and deeper layer at the right, B: Superficial layer at the left and deeper layer at the right after removal of the right front limb. 1a: m. trapezius pars cervicalis, 1b: m. trapezius pars thoracica, 2: m. latissimus dorsi, 3: fascia thoracodorsalis, 4: m. rectus capitis, 5: m. complexus, 6: m. splenius, 7a: m. rhomboideus cervicis, 7b: m. rhomboideus thoracis, 8: m. supraspinatus, 9: m. infraspinatus, 10: m. teres major, 11: m. spinalis, 12: m. longissimus dorsi, 13: m. iliocostalis, 14: m. serratus ventralis, 15: m. obliquus externus abdominis, 16: m. serratus dorsalis.
M. erector spinae:\t\t
M. iliocostalis: This long muscle originates from the wing of the ilium and inserts into the transverse processes of the lumbar vertebrae, the ribs and transverse processes of the last two cervical vertebrae. As such, a lumbar and thoracic part can be discerned (Figures 28 and 29).
M. longissimus dorsi: This long, cylindrical muscle that is covered by the thoracodorsal fascia lies medial to the former muscle and runs from the ilium to the mastoid process. Insertions can be found into the lumbar, thoracic and cervical vertebrae and the ribs (pars lumbalis, thoracis, cervicis and capitis) (Figure 28).
M. spinalis: This is the deepest muscle of this group. The origins and insertions are the spinal processes (Figures 28 and 29).
M. transversospinalis:
M. semispinalis (capitis) = m. complexus: This muscle was described earlier with the muscles of the dorsal and lateral cervical region (Figure 28).
Mm. multifidi et rotatores: These muscles lie very deep against the vertebrae. With their origins and insertions on the transverse processes and into the spinal processes, they can rotate the vertebral column.
M. serratus dorsalis cranialis: The cervicothoracic fascia offers the aponeurotic origin of this muscle that inserts into the 2nd to 5th ribs. The muscle fibers run in craniodorsal direction.
M. serratus dorsalis caudalis: The lumbosacral fascia offers the aponeurotic origin of this muscle that inserts into the caudal ribs. The muscle fibers run in caudodorsal direction.
Left lateral view of the abdominal muscles. A: Superficial musculature with 1: m. latissimus dorsi, 2: fascia thoracodorsalis, 3: m. serratus ventralis, 4: m. obliquus externus abdominis, 5: m. obliquus internus abdominis, 6: m. pectoralis abdominalis, 7: lamina externa vaginae m. recti abdominis. B. Deep musculature with 1: m. intercostalis externus, 2: m. transversus abdominis, 3: m. rectus abdominis, 4: fascia transversalis, 5: m. psoas minor, 6: m. psoas major, 7: m. quadratus lumborum, 8a: m. iliocostalis lumborum, 8b: m. iliocostalis thoracis 9a: m. longissimus lumborum, 9b: m. longissimus thoracis.
The tail of the rhesus monkey is nonprehensile. The muscles found on the dorsal aspect of the caudal vertebrae are the mm. interspinales caudae, the m. extensor caudae medialis, the m. extensor caudae lateralis, the m. abductor caudae medialis/internus and the m. abductor caudae lateralis/externus. The ventral muscles of the tail comprise the m. flexor caudae brevis, m. flexor caudae longus and the mm. intertransversarii caudae.
M. obliquus abdominis externus: The muscle has tendinous origins on the 4th to the 12th rib, where it interdigitates with the serratus ventralis muscle. In addition, muscle fibers originate dorsally from the lumbodorsal fascia in the lumbar region. The fibers run caudoventrally towards the linea alba onto which it attaches by means of an aponeurosis (Figures 29, 36, and 37).
M. obliquus abdominis internus: The fibers of this muscle that lies beneath the former originate from the thoracolumbar fascia and the iliac spine. The fibers run in cranioventral direction to become tendinous (aponeurosis) at the level of the straight abdominal muscle. The aponeurosis blends with that of the external oblique abdominal muscle and forms the external sheath of the straight abdominal muscle (Figures 29 and 36). In the male, the cremaster muscle branches off the internal oblique abdominal muscle (Figure 37).
M. transversus abdominis: This muscle arises from the costal arch, the lumbodorsal fascia and the iliac crest. The fibers run in dorsoventral direction to insert into the linea alba by means of an aponeurosis that forms the internal sheath of the straight abdominal muscle (Figure 29).
M. rectus abdominis: This muscle lies between the fused aponeurosis of the external and internal oblique abdominal muscles on the one hand and the aponeurosis of the transverse abdominal muscle. The muscle runs from the sternum to the pubis and presents several tendinous intersections (Figures 29 and 36).
Pectoral muscles:\t\t
M. pectoralis superficialis (m. pectoralis major):
Pars sternocapsularis: The sternoclavicular joint and the manubrium is the origo while the insertion is the intertubercular groove of the humerus (Figure 30).
Pars sternalis: This part has the same insertion site as the former but finds it origin along the entire length of the sternum (Figure 30).
Pars abdominalis: The origin is the xiphoid process and the cranial aspect of the external sheath of the straight abdominal muscle. The muscle inserts deep to the sternal part into the humerus (Figure 30).
M. pectoralis minor (m. pectoralis profundus): This pectoral muscle lies deep to the superficial pectoral muscle. It has origin on the cartilages of the 2nd to 6th ribs and is inserted into the greater tuberosity of the humerus (Figure 30).
M. subclavius: This small fusiform muscle arises from the 1st costal cartilage and is inserted into the clavicle (Figure 30).
M. trapezius: Both the cervical and thoracic parts arise from the scapular spine. The occiput and 10th thoracic vertebra are reached cranially, resp. caudally by this muscle that meets its counterpart in the dorsal midline (Figures 25, 26, and 28).
M. rhomboideus: The cervical part (m. rhomboideus cervicis = m. levator anguli scapulae) and thoracic part (m. rhomboideus thoracis) arise from the dorsal border of the scapula and insert into the occiput and nuchal ligament, and the first 6 thoracic vertebrae, respectively (Figure 28).
M. serratus ventralis: Muscle strands have attachments on the last four cervical vertebrae (m. serratus ventralis cervicis = m. levator scapulae) and first nine ribs (m. serratus ventralis thoracis) and inserts medially on the scapula (Figures 26, and 28–30).
M. latissimus dorsi: This muscle originates by means of an aponeurosis at the dorsal midline at the level of the 6th to 12th thoracic vertebrae and the lumbodorsal fascia. The insertion site is twofold, i.e. at the teres major tendon and into the bicipital groove (Figures 25, 26, and 28
Lateral views of the pectoral muscles. A: superficial layer, B: deeper layer, C: deepest layer. 1a: m. pectoralis superficialis pars sternocapsularis, 1b: m. pectoralis superficialis pars sternalis, 1c: m. pectoral superficialis pars abdominalis, 2: m. obliquus externus abdominis, 3: m. serratus ventralis, 4: m. serratus dorsalis, 5: m. subscapularis, 6: m. teres major, 7: m. latissimus dorsi, 8: m. pectoral profundus, 9: m. biceps brachii, 10: m. subclavius, 11: m. sternocostalis, 12: m. scalenus medius, 13a: m. cleidodeltoideus, 13b: m. acromiodeltoideus, 13c: m. spinodeltoideus, 14: m. latissimus dorsi.
M. supraspinatus: This muscle fills the supraspinous fossa and has insertion into the greater humeral tubercle (Figure 31).
M. infraspinatus: The origin is the infraspinous fossa. The muscle is covered by the spinodeltoid muscle. Its tendon inserts into the greater tubercle of the humerus, in between the tendons of the supraspinous and teres minor muscles (Figure 31).
M. deltoideus: The insertion is the deltoid tuberosity on the humerus. The origin is either the clavicle (M. cleidodeltoideus (M. deltoideus anterior)), the acromion (M. acromiodeltoideus (M. deltoideus medius)) or the scapular spine (M. spinodeltoideus (M. deltoideus posterior)) (Figure 30).
M. teres minor: This muscle has origin at the caudodistal margin of the shoulder blade and the caudal aspect of the infraspinatus muscle. It inserts into the greater tubercle of the humerus, just caudal to the insertion of the aforementioned muscle (Figure 31).
M. teres major: This muscle originates at the ventral angle and caudal border of the scapula and inserts medially into the humeral shaft in its proximal third (Figure 31).
M. subscapularis: The origin and insertion of this muscle are the subscapular fossa and the lesser tubercle of the humerus, respectively (Figure 31).
Musculature of the left shoulder. A: lateral view, B: medial view. 1: m. supraspinatus, 2: m. infraspinatus, 3: m. teres minor, 4: m. teres major, 5: m. triceps brachii caput longum, 6: m. triceps brachii caput laterale, 7: m. brachialis, 8: m. subscapularis, 9: m. latissimus dorsi, 10a: m. biceps brachii caput longum, 10b: m. biceps brachii caput breve, 11: m. coracobrachialis, 12: m. triceps brachii caput mediale, 13: m. triceps brachii caput laterale.
M. triceps brachii: The triceps muscle inserts into the olecranon of the ulna. Its long head (caput longum), lateral head (caput laterale) and medial head (caput mediale) originate from the caudal border of the scapula, the greater tuberosity of the humerus, and the proximo-medial side of the humeral shaft, respectively (Figures 25, 26, and 31).
M. anconeus (lateralis): This small muscle arises distally on the humeral shaft and inserts proximally on the ulna.
M. dorsoepitrochlearis: arises from the lower margin of the latissimus dorsi muscle and attaches to the antebrachial fascia and medial epicondyle of the humerus.
M. biceps brachii: The long head (caput longum) and short head (caput breve) run from the supraglenoid tubercle and coracoid process of the shoulder blade, respectively to the radial tuberosity of the radius (Figures 25, 26, 30, and 31).
M. coracobrachialis: Both the deep part (m. coracobrachialis profundus) and middle part (m. coracobrachialis medius) arise from the coracoid process on the shoulder blade. The former part inserts into the humeral neck, while the latter part attaches more distally at the medial side of the humeral shaft (Figure 31).
M. brachialis: The lateroproximal aspect of the humerus is the site of origin of this muscle, that follows the brachial sulcus of the humerus to insert into the medial coronoid process of the ulna (Figure 31).
M. extensor carpi radialis (longus et brevis): The lateral epicondylar crest of the humerus forms the origin of this muscle. The insertion is into the base of the 2nd metacarpal bone (long part) and 3rd metacarpal bone (short part) (Figures 32–34).
M. extensor carpi ulnaris: This muscle arises from the lateral epicondyle of the humerus and is inserted into the base of the 5th metacarpal bone (Figures 32 and 34).
M. extensor digitorum communis: This muscle arises from the lateral epicondyle of the humerus and inserts by means of four tendons into the distal phalanges of digits II to V (Figures 32 and 34).
M. extensor digiti:\t\t
primi longus (m. extensor pollicis longus): The origin is craniolaterally on the proximal half of the ulna and inserts into the distal phalanx of the pollex (Figure 34).
secundi (m. extensor indicis) et tertii: This muscle arises distal to the former muscle. At the level of the carpus, the tendon splits into two tendons, one to the proximal phalanx of the 2nd digit and one for the 3rd digit (Figures 32 and 34).
quarti: From the lateral humeral epicondyle to proximal phalanx of the 4th digit (Figures 32 and 34).
quinti: From the lateral humeral epicondyle to the middle phalanx of the 5th digit (Figures 32 and 34).
Lateral view of the musculature of the left forearm. A: superficial layer with 1: brachioradialis muscle, 2a: long part of extensor carpi radialis muscle, 2b: short part of extensor carpi radialis muscle, 3: extensor digitorum communis muscle, 4: extensor digitorum quarti et quinti muscle, 5: extensor carpi ulnaris muscle, 6: abductor digiti primi longus muscle. B: deep layer with 6: abductor digiti primi longus muscle, 7: extensor digitorum secundi et tertii muscle, 8: supinator muscle.
Medial view of the musculature of the left forearm. A: Superficial layer with 1: m. flexor carpi ulnaris, 2: m. palmaris longus, 3: m. flexor carpi radialis, 4: m. flexor digitorum profundus, 5: m. pronator teres, 6: m. extensor carpi radialis longus, 7: m. brachioradialis. B: Deep layer with 4: m. flexor digitorum profundus, 6: m. extensor carpi radialis longus, 6′: m. extensor carpi radialis brevis, 7: m. brachioradialis, 8: m. flexor digitorum superficialis.
Dorsal view of the musculature of the left hand. 1: m. extensor digitorum communis, 2: m. abductor digiti primi longus, 3: m. brachioradialis, 4: m. extensor carpi radialis longus, 5: m. extensor carpi radialis brevis, 6: m. extensor carpi ulnaris, 7: m. extensor digiti primi (pollicis) longus, 8: m. extensor digiti secundi, 9: m. extensor digiti tertii, 10: m. extensor digiti quarti, 11: m. extensor digiti quinti, 12: m. adductor digiti primi, 13: m. interosseous, 14: ligamentum carpi dorsale.
M. flexor carpi radialis: This muscle arises from the medial humeral condyle and inserts into the base of the 2nd metacarpal bone (Figures 33 and 35).
M. flexor carpi ulnaris: This muscle also arises from the medial humeral epicondyle. It attaches to the pisiform carpal bone (Figures 33 and 35).
M. palmaris longus: This muscle is situated in between the two aforementioned muscles. It also originates at the medial humeral epicondyle. It presents a distal aponeurosis (aponeurosis palmaris) which lies superficially at the palmar side of the hand (Figures 33 and 35).
M. brachioradialis: This muscle runs from the lateral humeral epicondyle to the distal aspect of the radius (Figures 32–35).
M. flexor digitorum superficialis (m. flexor digitorum sublimis): This very thin muscle originates on the medial epicondyle of the humerus. Its four tendons insert on the base of the 2nd phalanx of digits I to IV (Figures 33 and 35).
M. flexor digitorum profundus: This muscle arises from the proximal half of the ulna (caput ulnare) and the upper two-thirds of the radius (caput radiale). Five tendons arise, which are inserted into the palmar sides of the terminal phalanges of all five digits (Figures 33 and 35).
M. epitrochleoanconeus: This short muscle runs from the medial humeral epicondyle to the olecranon.
Palmar view of the musculature of the left hand. A: superficial layer, B: deeper layer, C: deepest layer. 1: m. flexor carpi ulnaris, 2: m. flexor carpi radialis, 3: m. palmaris longus with cut aponeurosis, 4: m. flexor digitorum superficialis, 5: m. brachioradialis, 6: m. abductor digiti primi brevis, 7: m. flexor digiti primi brevis superficialis, 8: m. flexor digiti primi brevis profundus, 9: m. adductor digiti primi, 10: m. flexor digiti quinti brevis, 11: m. abductor digiti quinti, 12: m. palmaris brevis, 13: mm. lumbricales, 14: ligamentum carpi palmare, 15: m. flexor digitorum profundus with 15a: caput radiale and 15b: caput ulnare, 16: m. opponens digiti quinti, 17: mm. contrahentes digitorum manus.
M. pronator teres: This pronator muscle of the forearm originates on the medial humeral epicondyle. It runs obliquely towards the middle third of the radius (Figure 33).
M. pronator quadratus: This rectangular muscle can be found at the medial side of the forearm, running from the proximal ulna to the distal radius.
M. supinator: The supinator of the forearm originates on the lateral humeral epicondyle. It runs obliquely towards the proximal half of the radius.
M. palmaris brevis: This short muscle, that lies directly subcutaneously, arises from the palmar aponeurosis and is inserted into the subcutis (Figure 35).
M. abductor digiti primi (pollicis) longus: This muscle has origin at the proximolateral aspect of the ulna and the cranial side of the radius. It attaches to the proximal end of the metacarpal bone of the pollex (Figures 32 and 34).
M. abductor digiti primi (pollicis) brevis: This muscle arises medially from the transverse carpal ligament. It is inserted into the base of the proximal phalanx of the pollex (Figure 35).
M. flexor digiti primi (pollicis) brevis: This muscle lies just lateral to the former. It also starts on the transverse carpal ligament and is inserted into the base of the proximal phalanx of the pollex (Figure 35).
M. adductor digiti primi (pollicis): This muscle runs from the 2nd and 3rd metacarpal bones towards the proximal phalanx of the pollex. The proximal and distal parts of this muscle cannot be discerned (Figures 34 and 35).
M. opponens digiti primi (pollicis): This muscle lies below the short abductor of the thumb. It runs from the transverse carpal ligament to the 1st metacarpal bone.
M. abductor digiti quinti: This muscle has origin on the transverse carpal ligament and the most lateral carpal bones. Insertion is into the proximal phalanx of the 5th digit (Figure 35).
M. flexor digiti quinti brevis: This muscle runs somewhat more medial and superficial compared to the former. The insertion site is the same (Figure 35).
M. opponens digiti quinti: This muscle lies deep compared to the abductor and flexor of the 5th digit. It insert along the entire length of the 5th metacarpal bone (Figure 35).
Mm. lumbricales manus: These muscles, which are 4 in number, are very well developed. They arise from the medial side of the deep flexor tendons to digits II – V. They are inserted into the base of the proximal phalanx and the metacarpophalangeal joints (Figure 35).
Mm. contrahentes digitorum manus: Origins are the proximal epiphyses of the 2nd and 3rd metacarpal bones. Insertion is into the proximal phalanges of the 2nd, 4th and 5th digits (Figure 35).
Mm. interossei manus: These muscles form pairs of muscles that are present in each intermetacarpal cleft. They attach to the sides of the metacarpophalangeal joints (Figure 34).
M. gluteus superficialis (m. gluteus maximus): The superficial gluteus muscle arises from the lumbar fascia and the first three caudal vertebrae. The tendon is inserted into fascia lata and the greater trochanter of the femur (Figures 25, 26 and 36).
M. gluteus medius: This deeper part of the gluteus musculature arises from the lateral surface of the wing of the ilium, the sacro-iliac joint and the first caudal vertebra. The large muscle is inserted into the greater trochanter of the femur (Figures 26 and 36).
M. gluteus profundus (m. gluteus minimus): This deepest gluteus muscle has its origin on the dorsal aspect of the ilium and inserts into the greater trochanter of the femur.
Lateral view of the left thigh musculature. 1: m. gluteus superficialis, 2: m. gluteus medius, 3: m. tensor fasciae latae, 4: fascia lata, 5: m. biceps femoris, 6: m. semitendinosus, 7: m. semimembranosus, 8: callositas ischii, 9: m. gastrocnemius caput laterale, 10: m. obliquus externus abdominis, 11: m. obliquus internus abdominis, 12: m. rectus abdominis.
M. psoas major: The psoas major muscle arises from the ventral sides of the lumbar vertebrae. The muscle is inserted into the lesser trochanter of the femur (Figure 29).
M. psoas minor: This psoas muscle lies ventromedial to the former. It originates from the ventral sides of the first four lumbar vertebrae and is inserted cranially on the pubic bone (tuberculum m. psoas minoris) (Figure 29).
M. iliacus: The origin of this muscle is the medial aspect of the ilium. It first runs lateral to the psoas major and finally joins it to form the m. iliopsoas (Figure 37). This muscle has insertion into the lesser trochanter of the femur (Figure 29).
M. quadratus lumborum: This muscle finds it origin on the crest and wing of the ilium. This thin quadrilateral muscle is inserted into the last rib and transverse processes of the lumbar vertebrae (Figure 29).
Medial view of the left thigh musculature. 1: m. sartorius, 2: m. gracilis, 3: m. pectineus, 4: m. adductor, 5: m. rectus femoris, 6: m. vastus intermedius, 7: m. vastus medialis, 8: m. semimembranosus, 9: m. iliopsoas, 10: m. cremaster, 11: m. obliquus externus abdominis.
M. sartorius: This long, slender muscle arises from the cranioventral spine of the ilium. It inserts into the medial side of the proximal third of the tibia (Figures 25, 37, and 39).
M. gracilis: This broad muscle starts from the pelvic symphysis and attaches to the craniomedial aspect of the proximal third of the tibia (Figures 25, 37, and 39).
M. pectineus: This short, fusiform muscle runs from the pecten pubis to the medioproximal aspect of the femur (Figures 25 and 37).
M. adductor (Figure 37):\t\t
longus: The origin of the long adductor muscle is the pelvic symphysis. It lies lateral (deep) to the gracilis muscle and inserts medially, halfway the femur (Figure 25).
magnus: This muscle is composed of two parts that individually attach to the proximocaudal part of the femoral diaphysis. Their origins are the pelvic symphysis and tuber sciatic tuberosity, respectively.
brevis: The small adductor muscle starts just ventral to the foramen obturatum and attaches to the medioproximal aspect of the femur.
M. obturatorius externus: This muscle arises from the obturator membrane and the bone surrounding the obturator foramen, at its dorsal side. The tendon is inserted into the intertrochanteric fossa.
M. obturatorius internus: This muscle also arises from the obturator membrane and the bone surrounding the obturator foramen, albeit at its ventral side. The insertion is at the medial side of the greater trochanter of the femur.
Mm. gemelli: The gemelli originate from the ischium. Their tendons are inserted into the tendon of the m. obturatorius internus.
M. quadratus femoris: This muscle runs from the sciatic tuberosity to the lesser femoral trochanter.
M. quadriceps: Intramuscular injections can be administered in this muscle that consists of four parts. All insert into the basis of the patella.\t\t
M. rectus femoris: The origin is just dorsal to the acetabulum (Figures 25 and 37).
M. vastus lateralis: This part of the quadriceps muscle arises from the greater trochanter of the femur.
M. vastus medialis: This muscle arises from lesser trochanter of the femur (Figure 37).
M. vastus intermedius (formerly described as the m. crureus): This deep muscle arises from the proximal three-fourths of the shaft of the femur (Figure 37).
M. tensor fasciae latae: The origin of this muscle is the ilium and the fascia overlying the gluteus medius muscle. The muscle is inserted into the fascia lata (Figures 25, 26, and 36).
M. biceps femoris: The biceps femoris muscle arises from the ischial tuberosity. The muscle forms a thin aponeurosis that is inserted into the fascia cruris (Figures 25, 26, and 36). This muscle can be used to administer intramuscular injections.
M. semitendinosus: This muscle also arises from the sciatic tuberosity, just caudal to the biceps femoris muscle. The tendon lies superficial to the semimembranosus muscle and attaches to the medial surface of the tibial shaft, deep to the tendon of the gracilis muscle (Figures 26, 36, and 38).
M. semimembranosus: The semimembranosus muscle consists of the smaller and more lateral semimembranosus proprius muscle and larger and more medial semimembranosus accessories muscle. The origins of both is caudal on the sciatic tuberosity. The semimembranosus proprius muscle is inserted medially on the tibial tuberosity, while the accessory semimembranosus muscle is broadly inserted more proximally, at the level of the medial femoral condyle (Figures 25, 26, 36, 37, and 39).
M. popliteus: This muscle is the only intrinsic flexor muscle of the knee. The fan-shaped muscle is located at the caudal side of the proximal tibial shaft. Its tendon inserts into the popliteal fossa of the femur (Figure 39).
Lateral view of the lower leg musculature (left hind limb). A: superficial layer, B: deeper layer, C: deepest layer. 1: m. biceps femoris, 2: m. semitendinosus, 3: m. gastrocnemius caput laterale, 4: m. tibialis cranialis, 5: m. extensor digitorum longus, 6: m. fibularis longus, 7: m. fibularis brevis, 8: m. tibialis caudalis, 9: m. plantaris, 10: m. soleus, 11: m. extensor digiti primi (hallucis) longus.
Medial view of the lower leg musculature (left hind limb). A: superficial layer, B: deeper layer, C: deep layer, D: deepest layer. 1: m. sartorius, 2: m. gracilis, 3a: m. gastrocnemius caput mediale, 3b: m. gastrocnemius caput laterale, 4: m. soleus, 5: m. plantaris, 6: m. flexor digitorum tibialis, 7: m. tibialis cranialis, 8: m. popliteus, 9a: m. semimembranosus accessorius, 9b: m. semimembranosus proprius, 10: m. tibialis caudalis.
M. tibialis cranialis: This muscle arises from the lateral condyle of the tibia and from the upper two-thirds of its shaft. Two bellies can be observed. The medial tendon attaches to the 1st tarsal bone, whereas the lateral tendon is inserted into the head of the 1st metatarsal bone (Figures 38–40).
M. extensor digitorum longus: The origins of this muscle are the lateral condyle of the tibia, and the fibular head. Three tendons arise at the level of the foot that are inserted into the middle and distal phalanges of the 2nd to 5th digits (Figures 38 and 40).
M. extensor digiti primi (hallucis) longus: This very thin muscle that lies deep to the former muscle obtains its origin from the medial side of the fibular diaphysis. The tendon is inserted into the terminal phalanx of the hallux (Figures 38 and 40).
M. fibularis longus: This muscle has its origin on the fibula and proximal epiphysis of the fibula. The tendon crosses the lateral malleolus and inserts into the plantar side of the 1st metatarsal bone, thus crossing the plantar side of the foot (Figure 38).
M. fibularis brevis: This muscle arises from the lower two-thirds of the shaft of the fibula. Insertion is into the metatarsal bone of the 5th digit (Figure 38).
M. fibularis digiti quinti: This muscle present a similar topography as the former muscle, but inserts into the distal phalanx of the 5th digit.
Dorsal view of the musculature of the left foot. A: superficial layer, B: deep layer. 1: retinaculum proximalis, 2: retinaculum distalis, 3: m. tibialis cranialis (two bellies), 4: m. extensor digitorum longus, 5: m. extensor digiti primi (hallucis) longus, 6: m. adductor digiti primi (hallucis), 7:m. extensor digitorum et digiti primi (hallucis) brevis, 8: m. abductor digiti quinti, 9: mm. interossei.
M. gastrocnemius: The lateral and medial heads of the gastrocnemius muscle arise from the lateral and medial epicondyle of the femur, respectively. A sesamoid bone is present in each tendon of origin (ossa sesamoidea m. gastrocnemii or fabellae). The tendo Achilles attaches to the tuber calcanei (Figures 25, 26, 36, 38, and 39).
M. soleus: This thin muscle arises from the head of the fibula. Its tendon fuses with the gastrocnemius muscle (Figures 38 and 39).
M. plantaris: The thin plantaris muscle has its origin on the lateral condyle of the femur. Its thin tendon lies on the medial side of the tendo Achilles and is inserted into the plantar fascia (Figures 38 and 39).
M. flexor digitorum (longus) tibialis (can be considered as the m. flexor digitorum superficialis): This muscle arises halfway from the caudal side of the tibia. The tendon crosses the medial malleolus and splits to attach to the plantar sides of the distal phalanges of digits II to V (Figure 41).
M. flexor digitorum (longus) fibularis (can be considered as the m. flexor digitorum profundus): This muscle lies deep to the former. It arises from the caudomedial aspect of the fibula, the interosseous membrane between the tibia and fibula, and the distal part of the tibia. The tendon travels along the plantar side of the tarsal joint, then splits in three tendons, one for digit I, III and IV (Figure 41).
M. tibialis caudalis: This muscle arises from the caudal side of the tibia. Its tendon crosses the medial malleolus and inserts into the plantar sides of the metatarsal bones of digits II to IV (Figures 38 and 39).
Plantar view of the musculature of the left foot. A: middle layer, B: deep layer. 1: m. quadratus plantae, 2: m. flexor digitorum (longus) tibialis, 3: m. flexor digitorum (longus) fibularis (tendon to digit I), 4: m. abductor digiti primi (hallucis), 5: m. flexor digiti primi (hallucis) brevis, 6: m. adductor digiti primi (hallucis), 7: m. flexor digiti quinti brevis, 8: mm. lumbricales, 9: mm. contrahentes digitorum pedis, 10: mm. interossei.
M. flexor digitorum brevis: The superficial head has its origin on the tuber calcanei. This head forms the short flexor of digit II as it inserts into its middle phalanx. The deep head arises from the flexor digitorum tibialis tendon, at the level of the medial malleolus. The three tendons are inserted into the base of the middle phalanx of digits III to V.
M. abductor digiti primi (hallucis): This muscle starts from the calcaneus and inserts into the plantar side of the proximal phalanx of the hallux (Figure 41).
M. flexor digiti primi (hallucis) brevis: Two heads originate from the plantar side of the tarsus and insert into the proximal phalanx of the hallux (Figure 41).
M. extensor digitorum et digiti primi (hallucis) brevis: This dorsally located muscle starts at the calcaneus and sends four tendons towards distal phalanx of digits I to IV (Figure 40).
M. adductor digiti primi (hallucis): This broad muscle has origin at the metatarsal bones of the 2nd and 3rd digits. The proximal phalanx of the hallux is the insertion site (Figures 40 and 41).
M. abductor digiti quinti: This muscle runs from the tuber calcanei towards the proximal phalanx of the 5th digit (Figure 40).
M. abductor ossis metatarsi quinti: This inconsistently present muscle runs lateral from the former muscle and inserts into the metatarsal bone of the 5th digit.
M. flexor digiti quinti brevis: This muscle has origin at the tendon of the fibularis longus muscle at the level of the metatarsal bone of the 5th digit. It inserts at the proximal phalanx of the 5th digit (Figure 41).
M. quadratus plantae: The origin is on the lateral side of the calcaneus. It splits into several tendons that insert into the tendons of the flexor digitorum longus muscles (Figure 41).
Mm. lumbricales pedis: Four fine muscle strands find their origins deep to the flexor digitorum brevis muscle. They run medial to the metatarsal bones of the 2nd to 5th digits to insert into their proximal phalanges (Figure 41).
Mm. contrahentes digitorum pedis: These muscles have a single aponeurosis in common at the level of the fibularis longus muscle. Three muscular bands originate from here to insert into the proximal phalanges of the 2nd, 4th and 5th digit (Figure 41).
Mm. interossei pedis: These muscles form pairs of muscles that are present in each intermetatarsal cleft. They attach to the sides of the metatarsophalangeal joints (Figures 40 and 41).
The rhesus monkey is omnivorous and mainly feeds on fruit, vegetables, insects and small mammals. Its dentition is very similar to that of humans as it also presents 32 teeth of which two incisors, one canine, two premolars and three molars in each quadrant. The teeth are of the brachydont type, thus with typical crowns and roots. The canines are more pronounced in the male compared to the female rhesus monkey. Furthermore, the premolars and molars are of the bunodont type, thus with typical cusps. The number of roots is one for the incisors and the canines, two for the premolars and molars of the mandible, and three for the premolars and molars of the maxilla (Figures 42 and 43).
Ventral view of the upper jaw (A) and dorsal view of the lower jaw (B) with the teeth unilaterally present. I1: dens incisivus primus, I2: dens incisivus secundus, C: dens caninus, P2: dens premolaris secundus, P3: dens premolaris tertius, M1: dens molaris primus, M2: dens molaris secundus, M3: dens molaris tertius.
Dentition of the rhesus monkey. Upper panel: teeth of the right upper jaw after extraction. Lower panel: teeth of the right lower jaw after extraction. Notice the clear distinction between the crowns and roots, and the number of roots.
It is worthwhile to mention that the rhesus monkey possesses a pair of cheek pouches [12]. The tongue plays a pivotal role in digestion and vocalization. The muscles that are responsible for the lingual movements are discussed in section 5.4. The dorsal mucosa of the tongue presents several types of papillae. Gustatory papillae include the fungiform, circumvallate and foliate papillae. The filiform papillae are of the mechanical type (Figure 44).
Dorsal view of the tongue. 1: papillae fungiformes, 2: papillae circumvallatae, 3: papillae foliatae, 4: papillae filiformes.
After a ventral midline incision through the abdominal wall has been made, the greater omentum (omentum majus) that covers the majority of abdominal organs can be observed (Figure 45A). It consists of the parietal and visceral sheets that enclose the virtual omental bursa. The parietal sheet is attached to the greater curvature of the stomach, while the visceral sheet is attached to the dorsal abdominal wall. The abdominal organs can only be observed after retraction or excision of the greater omentum (Figure 45B).
Ventral view of the abdominal cavity after a ventral midline incision was performed. A: The omentum majus is still present with 1: urinary bladder, 2: parietal sheeth of the omentum majus. B: The omentum majus is excised with 1: diaphragm, 2: lobus hepatis dexter lateralis, 3: lobus hepatis dexter medialis, 4: lobus hepatis sinister medialis, 5: ligamentum falciforme, 6: curvatura major of the stomach, 7: cecum, 8: colon transversum, 9: colon descendens, 10: mesocolon, 11: jejunum.
The esophagus presents a cervical, thoracic and abdominal segment. The cervical segment lies at the left side of the trachea. It bends to the right side of the body when reaching the thorax and deviates to the left side again to perforate the diaphragm (hiatus oesophageus). Its muscular layer is composed of an outer layer of longitudinally orientated fibers and an inner layer of circular fibers that enable peristalsis. The abdominal segment contains smooth muscle cells, while the other two segments present striated muscle fibers. The esophagus finally enters the stomach a few centimeters caudal to the diaphragm. Here, the cardiac sphincter is located. Relaxation of this sphincter and antiperistalsis in the esophagus allow for vomiting.
The stomach (Figure 46) consists of the fundus, the body, the pyloric canal and the pyloric antrum. The fundus is large and extends cranially left to the esophagus. The corpus is continuous with the esophagus and cannot be delineated from the fundus by any anatomical landmark. The pyloric antrum is continuous with the corpus. It can be distinguished from the body by its smaller diameter. The narrow short tube that follows is the pyloric canal that ends at the pyloric sphincter.
The reddish spleen is tongue-shaped and lies at the left side of the abdomen. It is connected to the stomach by means of the gastro-splenic ligament (Figure 46). The spleen is, however, a lymphoid organ.
Dorsal view of the stomach with the spleen attached. 1: oesophagus, 2: pars cardiaca, 3: fundus ventriculi, 4: corpus ventriculi, 5: pars pylorica, 6: pars cranialis duodeni, 7: lien.
The isolated intestinal tract of the rhesus monkey is presented in Figure 47. The small intestine measures approximately 175 cm in length and is composed of the duodenum, the jejunum and the ileum. The duodenum presents a long descending part (duodenum pars descendens/duodenum descendens) that is located at the right side of the abdomen, a short transverse part (duodenum pars transversa/duodenum transversum) in which the chyme travels from right to left in the caudal half of the abdominal cavity, and a short ascending part (duodenum pars ascendens/duodenum ascendens) at the left side of the abdomen. The basis of the mesentery lies in the middle of the J-shaped duodenum. The common bile duct (ductus choledochus) and the pancreatic ducts (i.e. ductus pancreaticus and ductus pancreaticus accessorius) enter the descending part of the duodenum at 1/3 of its length. The accessory pancreatic duct enters the duodenum separately on the minor duodenal papilla, whereas the common bile duct and the principal pancreatic duct join to terminate on the major duodenal papilla. Within the mesoduodenum descendens, the tail or lobus dexter of the pancreas is found. This organ measures approximately 12 cm by 2 cm. Its body (corpus pancreatis) and left lobe (lobus sinister pancreatis) lie within visceral sheet of the greater omentum against the stomach and in the mesocolon ascendens (Figure 48). The jejunum presents several loops and continues as the ileum that is anatomically defined as that segment of the small intestine that is attached to the cecum by means of the plica ileocecalis. The ileum finally enters the cecum (ostium ileocecale).
Isolated intestinal tract. 1: oesophagus, 2: stomach, 3: duodenum descendens, 4: duodenum transversum, 5: duodenum ascendens, 6: jejunum, 7: ileum, 8: caecum, 9: colon ascendens, 10: colon transversum, 11: colon descendens, 12: rectum.
Pancreas of the rhesus monkey in situ (A) and ex corpore (B) with 1: corpus ventriculi, 2a: lobus pancreatis sinister, 2b: lobus pancreatic dexter, 3: omentum majus paries profundus, 4: hepar.
The large intestine measures approximately 63 cm in length ans consists of the cecum, colon and rectum. The cecum can be found at the junction between the ileum and colon at the right side of the abdomen (Figure 45B). The cecum (Figure 49) is relatively large, measures 7 cm in length and lacks an appendix. Ventral and dorsal teniae that consist of smooth muscle fibers are present. They give origin to the several sacculations called haustra. The U-shaped colon consists of the ascending part (colon pars ascendens/colon ascendens), the transverse part (colon pars transversa/colon transversum) and the descending part (colon pars descendens/colon descendens). Its total length is approximately 46 cm. It present two teniae that give origin to haustra. The descending colon travels along the left side of the abdomen and passes insensibly into the rectum that is approximately 10 cm long and is defined as that segment of the large intestine that is located within the pelvic cavity.
Isolated cecum. 1: ileum, 2: plica ileocecalis, 3: apex ceci, 4: tenia, 5: corpus ceci, 6: colon ascendens.
The liver lies most cranial in the abdomen (Figure 45B). It measures approximately 15 cm by 10 cm. Its diaphragmatic side is located against the diaphragm while its visceral side faces the viscera, in particular the stomach. The esophagus runs in a fissure between the left and the caudate lobes. The lobulation of the liver is presented in Figure 50. The falciform ligament runs from the umbilicus to the liver, in between the left and right liver lobes towards the diaphragmatic side. This side is attached to the diaphragm by means of the left and right triangular ligaments and the coronary ligament. At the visceral side, the gall bladder is lodged in between the quadrate lobe and the right medial lobe.
Liver. A: visceral side with 1: lobus hepatis dexter lateralis, 2: lobus hepatis dexter medialis, 3: lobus hepatis sinister lateralis, 4: lobus hepatis sinister medialis, 5: processus anonimus, 6: processus papillaris of lobus caudatus, 7: processus caudatus of lobus caudatus, 8: vesica biliaris, 9: lobus quadratus. B: diaphragmatic side with 1 – 4 idem as in A, 5: ligamentum falciforme, 6: ligamentum triangulare dextrum, 7: ligamentum coronarium.
The common bile duct joins the principal pancreatic duct to enter the duodenum on the major duodenal papilla. The portal vein and hepatic artery enter the liver at the porta hepatis. Both vessels join at the level of the sinusoids. The blood within the sinusoidal system flows towards the central veins in the center of the liver lobules. These finally join to form multiple hepatic veins that ultimately drain into the caudal vena cava that runs at the dorsal margin of the liver (Figure 51).
Vascular corrosion cast of the liver, visceral side. 1: a. hepatica, 2: v. portae, 3: ductus choledochus, 4: vesica biliaris, 5: liver sinusoids.
The brownish, bean-shaped kidneys measure approximately 5 cm by 3 cm. The lateral margin is convex while the medial margin is concave (Figure 52B). The cranial pole of the left kidney lies against the left lobe of the pancreas and lies more caudal than the right kidney that makes contact with the caudate lobe of the liver. As a result, this liver lobe presents a renal impression. An adipose capsule surrounds the kidneys that are overlaid with a fibrous capsule (Figure 52A). At the hilus, the renal artery and renal vein enter the kidney, while the ureter leaves the kidney. After a longitudinal section of the kidney has been performed, the red cortex, brown medulla and the pale pelvis can be observed (Figure 52C).
A: Kidney (1) encapsulated by the capsula adiposa (2) and capsula fibrosa (3). B: Left kidney and adrenal gland ex corpore with 1: margo lateralis, 2: margo medialis, 3: hilus renalis, 4: glandula adrenalis, 5: polus cranialis, 6: polus caudalis, 7: ureter. C: Longitudinally sectioned kidney of which the blood vessels are filled with white latex rubber showing the cortex (1), medulla (2) and pelvis renalis (3).
The ureters lead the urine into the urinary bladder. Like the kidneys, they lie retroperitoneally. The abdominal part travels dorsal to the a. and v. ovarica or a. and v. testicularis. The pelvic part is located within the pelvic cavity and crosses the a. and v. iliaca externa ventrally. The intramural part travels obliquely within the wall of the urinary bladder.
The urinary bladder measures approximately 10 cm in length and 7 cm in width when filled with urine. It is attached to the abdominal wall by means of the median ligament (ligamentum vesicae medianum) and the left and right lateral ligaments (ligamenta vesicae lateralia). When the urinary bladder is cut longitudinally from the cervix, over the corpus to the apex, the mucosa can be studied. In the cervix, a left and right ostium ureteris is present on the respective columna ureterica. These distally elongate to form the left and right plica ureterica that distally join at the crista urethralis. As such, the trigonum vesicae is delineated. At the ostium urethrae internum, the urethra finds its origin (Figure 53).
A: Urinary bladder in situ showing the apex vesicae (1), corpus vesicae (2), cervix vesicae (3), ligamentum vesicae laterale dextrum (4), ligamentum vesicae laterale sinistrum (5). B: Opened urinary bladder with indication of the ostia ureteria (1), columnae uretericae (2), plicae uretericae (3), crista urethralis (4).
The female urethra is rather short as it opens ventrally into the vagina. This opening, the ostium urethrae externum, forms the border between the actual vagina and the vestibulum vaginae.
The adrenal glands are located within the adipose capsules of the kidneys, at their cranial poles (Figure 57B). They have a pink color, are lobulated and measure approximately 1 cm in length and a few mm in width (Figure 52B). The pink cortex produces mineralocorticosteroids, glucocorticosteroids and androgens. The brown medulla produces adrenalin and noradrenalin.
The oval-shaped ovaries measure approximately 8 mm in length and 6 mm in width. At the margo mesovaricus, they are attached to the abdominal wall by means of the mesovarium. The margo liber is devoid of any ligaments. The ligamentum suspensorium ovarii connects the ovary with the lateral pelvic wall. The a. and v. ovarica lie within this ligament. The ligamentum ovarii proprium links the ovary to the uterus.
The coiled fallopian tubes or oviducts lie lateral to the ovaries. They are attached to the abdominal wall by means of the mesosalpinx. The tapered infundibulum that lies against the ovary presents fimbriae to collect the ovulated ovum. Fertilization takes place within the wider ampulla. The isthmus is narrower and opens up into the uterus.
The uterus of the rhesus monkey is of the simplex type. The fundus uteri, corpus uteri and isthmus uteri measure approximately 5 mm, 10 mm and 5 mm in length, respectively. The isthmus is in continuation with the canalis cervicis uteri that is the central canal within the cervix. The uterus is connected with the abdominal wall by means of the mesometrium. Together with the mesosalpinx and the mesovarium, it forms the broad uterine ligament. The ligamentum teres uteri attaches to the uterine body and travels through the inguinal canal. Terminal fibers of this ligament disperse into the vulva lips (Figure 54).
A: The female reproductive tract in situ. 1: rectum, 2: ovarium, 3: tuba uterina, 4: isthmus tubae uterinae, 5: fundus uteri, 6: corpus uteri, 7: isthmus uteri, 8: ligamentum teres uteri, 9: vesical urinaria, 10: ligamentum latum uteri, 11: anulus inguinalis profundus. B: Isolated female reproductive tract. 1: margo liber ovaricae, 2: margo mesovaricus, 3: ovarium, 4: mesosalpinx, 5: tuba uterina, 6: ligamentum ovarii proprium, 7: ligamentum latum uteri, 8: ligamentum teres uteri, 9: fundus uteri, 10: corpus uteri, 11: isthmus uteri, 12: cervix, 13: vagina. C: Isolated female reproductive tract with opened uterus. 1: fundus uteri, 2: corpus uteri, 3: isthmus uteri, 4: canalis cervicis uteri, 5: fornix vaginae, 6: portio vaginalis cervicis, 7: vagina, 8: myometrium, 9: endometrium.
The vagina begins distal to the cervix. The portio vaginalis cervicis is the protrusion of the cervix into the vagina. The fornix vaginae is surrounding this structure. The vaginal mucosa is slightly keratinized and presents irregular folds. The vestibulum vaginae lies more distal and can be reached through the ostium vaginae. The border between the vagina and the vestibulum is formed by the urethral opening. This perineal opening that is located ventral to the anal opening is enclosed by a pair of vulva lips.
The primary genital glands of the male rhesus monkey are the testes. These are located in the scrotum that lies caudoventrally in the perineal region (Figure 2). The scrotal skin is thin and a has a limited number of hairs. This favors thermoregulation. The raphe scroti is visible in the midline and is continuous with the internal septum scroti that divides the scrotum in two separate cavities (cavum vaginale). These cavities can be reached by incision through the scrotal skin.
After transecting the wall of the vaginal cavity, i.e. the tunica vaginalis, the testis can be observed. This egg-shaped organ measures approximately 5 cm in length and 3 cm in width. It is encapsulated by the pale tunica albuginea that consist of dense connective tissue (Figure 55).
A: Penis and scrotum of the male rhesus monkey. 1: scrotum, 2: raphe scroti, 3: radix penis, 4: corpus penis, 5: glans penis, 6: preputium. B: Incision through the scrotal skin showing the testes. 1: scrotal skin, 2: septum scroti, 3: tunica vaginalis (partially incised), 4: tunica albuginea, 5: cauda epididymidis, 6: raphe scroti.
The a. testicularis is responsible for the testicular blood supply. It is surrounded by the venous plexus pampiniformis that cools the arterial blood. The ductus deferens is closely associated with the testicular blood vessels as they form the funiculus spermaticus that is enclosed by the tunica vaginalis. The ductus deferens is the continuation of the ductus epididymidis. This duct is extremely coiled, forming the epididymis, a solid structure adjacent to the testis. It can be divided into the caput, corpus and cauda epididymidis. The corpus lies against the medial side of the testis and is connected with this structure through the ligamentum testis proprium. The cauda epididymidis is attached to the tunica vaginalis by means of the ligamentum caudae epididymidis (Figure 56).
Left testis and epididymis of the rhesus monkey. 1: testis, 2: extremitas dorsalis, 3: extremitas ventralis, 4: caput epididymidis, 5: corpus epididymidis, 6: cauda epididymidis, 7: ductus deferens, 8: plexus pampiniformis.
The ductus deferens leaves the vaginal cavity through the inguinal canal. After it has entered the abdominal cavity, it presents a caudal flexion dorsal to the ureter to flow into the pelvic part of the urethra. Along this urethral segment, three accessory glands are present. The ellipsoid, lobulated vesicular glands are large, 5–6 cm in length. They are positioned against the neck of the urinary bladder. Their caudal parts have contact with the prostate. This gland is spherical with a diameter of approximately 1 cm. Its body is positioned in between the caudal parts of the vesicular glands, at the dorsal side of the urethra. Some glandular tissue, however, surrounds the urethra. The bulbourethral glands are very small. They can be found caudolateral to the prostate gland (Figure 57).
A: Ventral view of the isolated male urogenital tract. 1: ren, 2: glandula adrenalis, 3: ureter, 4: vesical urinaria, 5: glandula vesicularis, 6: ductus deferens, 7: plexus pampiniformis, 8: testis, 9: epididymis, 10: tunica vaginalis, 11: penis, 12: prostata, 13: glandula bulbourethralis. B: Larger magnification of the urinary bladder (1) and the accessory genital glands comprising the glandula vesicularis (2) and the prostata (3).
The penis of the rhesus monkey is of the cavernous type. When the penis is transected, the paired corpora cavernosa can be recognized by their pale brown color. Both are divided by the penile septum. The free part of the penis is approximately 5 cm long. It consists of the corpus penis and the glans penis. The urethral opening is located at the ventral side of the glans. The glans is covered by the preputium (Figure 58).
Dorsal view of the penis. 1: radix penis with a. dorsalis penis, 2: preputium, 3: corpus penis, 4: glans penis.
The major intrathoracic organs are the lungs. The lungs can be examined by auscultation are medical imaging in the region from the 2nd to the 8th intercostal space. They consist of the left and right lungs that are separated by the mediastinum. Both are divided into lung lobes by fissures. The left lung consists of a cranial and caudal lung lobe that are separated by the interlobar fissure. The left cranial lung lobe is additionally divided into a cranial part and a caudal part by the cardiac scissure. The right lung has four lobes. The presence of the cranial and caudal interlobar fissures allows for the determination of the cranial, middle and caudal lung lobes. In addition, an accessory lung lobe is present in the right lung (Figure 59).
Lungs. A: Left lateral view of the left lung with 1: trachea, 2a: lobus cranialis, pars cranialis, 2b: lobus cranialis, pars caudalis 3: lobus caudalis, 4: incisura cardiaca, 5: fissura interlobaris. B: Right lateral view of the right lung with 1: trachea, 2: lobus cranialis, 3: lobus medius, 4: lobus caudalis, 5: lobus accessorius, 6: fissura interlobaris cranialis, 7: fissura interlobaris caudalis.
Each lung lobe is ventilated by a principal bronchus (bronchus principalis sinister et dexter). These are the terminal bifurcation of the trachea. This structure counts approximately 27 cartilaginous rings and measures approximately 10 cm in length and 1 cm in diameter. Intrathoracically, the trachea lies ventral to the esophagus and is crossed by the aortic arch at its left side. From the left and right principal bronchi, two and three specific bronchi (bronchi lobares) for the several lung lobes branch off, respectively. The bronchus for the left cranial lung lobe further splits into a bronchus for the cranial part and one for the caudal part. The bronchus for the accessory lobe of the right lung is a branch from the caudal lobar bronchus (Figure 60).
Polyurethane cast of the lungs, ventral view. 1: trachea, 2: bifurcatio tracheae, 3a: bronchus principalis sinister, 3b: bronchus principalis dexter, 3a1: bronchus lobaris for the left cranial lung lobe, 3a2: bronchus lobaris for the left caudal lung lobe, 3b1: bronchus lobaris for the right cranial lung lobe, 3b2: bronchus lobaris for the right middle lung lobe, 3b3: bronchus lobaris for the right caudal lung lobe, 4a: pars cranialis lobi cranialis pulmonis sinistri, 4b: pars caudalis lobi cranialis pulmonis sinistri, 5: lobus caudalis pulmonis sinistri, 6: lobus cranialis pulmonis dextri, 7: lobus medius pulmonis dextri, 8: lobus caudalis pulmonis dextri, 9: lobus accessorius pulmonis dextri, 10: incisura cardiaca, 11: fissura interlobaris, 12: fissura interlobaris cranialis, 13: fissura interlobaris caudalis.
The heart lies in the thoracic cavity in the region from the 2nd to the 4th intercostal space. It is located between the lungs, in de middle mediastinum, and is enclosed by the pericardium. This fibrous structure dorsally attaches to the basis of the heart and ventrally to the sternum by means of the sternopericardiac ligament. After removal of the left thoracic wall, the blunt apex of the heart, which is formed by the left ventricle, can be observed in between the left cranial and caudal lung lobes as the longitudinal axis of the heart presents a deviation of approximately 45° towards the left. As a result, both the left and right auricle can be observed from the left. The left lateral aspect of the heart is therefore called the auricular side (facies auricularis). Both atria are visible from the right side. This side of the heart is the atrial side (facies atrialis). After removal of the right thoracic wall, it can be observed that the right heart including the right auricle and ventricle rests on the sternum as a result of the counterclockwise quarter rotation of the longitudinal cardiac axis (Figure 61).
Right lateral view of the thoracic cavity with 1: lobus cranialis pulmonis dextri, 2: lobus medius pulmonis dextri, 3: lobus caudalis pulmonis dextri, 4: lobus accessorius pulmonis dextri, 5: heart within the pericardium, 6: diaphragma, 7: n. phrenicus.
The left atrium, that is enlarged by the presence of the left auricle, receives oxygenated blood from the lungs via the four pulmonary veins. The left atrium is smaller in volume than the right atrium and has a smoother inner surface. From here, the blood flows to the left ventricle. The bicuspid left atrio-ventricular valve, i.e. the mitral valve, separates the left auricle from the left ventricle. It is attached to the papillary muscles in the wall of the left ventricle by means of the chordae tendineae. The latter presents a well trabeculated wall (trabeculae carneae) of approximately 6–9 mm in width. A septomarginal trabecula can be observed. Subsequently, blood flows to the ascending aorta. The aortic valve contains three valvulae.
The right atrium, with its right auricle, receives the systemic venous blood through the cranial and caudal vena cava that join at the level of the tuberculum intervenosum. Its wall is characterized by the mm. pectinati. The right auriculo-ventricular valve presents three cusps and is therefore known as the tricuspid valve. The wall of the right ventricle is also trabeculated and measures 1–2 mm in width. The right lumen contains a septomarginal trabecula. The pulmonary valve has the typical arrangement with three valvulae (Figures 62 and 63).
External anatomical landmarks of the heart. A: Left view, facies auricularis with 1: basis cordis, 2: apex cordis, 3: margo ventricularis dexter, 4: margo ventricularis sinister, 5: sulcus coronarius, 6: sulcus interventricularis paraconalis, 7: auricula sinistra, 8: auricula dextra, 9: ventriculus dexter, 10: ventriculus sinister, 11: aorta descendens, 12: truncus pulmonalis, 13: v. cava cranialis, 14: vv. pulmonales. B: Right view, facies atrialis with 1: basis cordis, 2: apex cordis, 3: margo ventricularis sinister, 4: margo ventricularis dexter, 5: sulcus coronarius, 6: sulcus interventricularis subsinuosus, 7: atrium dextrum, 8: sulcus terminalis, 9: ventriculus dexter, 10: atrium sinistrum, 11: ventriculus sinister, 12: aorta descendens, 13: vv. pulmonales, 14: v. cava cranialis, 15: v. cava caudalis, 16: sinus venarum cavarum.
Heart and larger vessels. A: Latex injected specimen, B: Vascular corrosion cast. 1: a. coronaria sinistra ramus interventricularis paraconalis, 2: ventriculus sinister, 3: ventriculus dexter, 4: atrium sinistrum, 5: arcus aortae, 6: vv. pulmonales, 7: v. cava caudalis, 8: aorta thoracica.
The left and right coronary arteries (a. coronaria sinistra et dextra) branch off the short ascending aorta, which runs craniodorsally, just above the aortic valve. These can initially be seen in the coronary sulcus. The a. coronaria dextra gives the a. interventricularis subsinuosus that runs in the sulcus interventricularis subsinuosus. It ultimately joins the ramus circumflexus of the a. coronaria sinistra. This coronary artery runs initially in the coronary sulcus, gives the ramus interventricularis paraconalis that runs in the sulcus interventricularis paraconalis, and continues as the ramus circumflexus that joins the right coronary artery. The left coronary artery is more pronounced than the right (Figure 63).
The aortic arch presents a branching pattern that is dissimilar to that in humans. Only two branches can be seen, the brachiocephalic trunk and the left subclavian artery. From the short initial segment of the brachiocephalic trunk, also known as the truncus communis, branches the left common carotid artery after a few mm to 1 cm. In humans, the left common carotid artery is a direct branch of the aortic arch. The right common carotid artery branches off subsequently. The continuation of the brachiocephalic trunk is the right subclavian artery (Figure 64).
Branching vessels from the aortic arch. A: Native specimen, B: Vascular corrosion cast. 1: aorta ascendens, 2: arcus aortae, 3: aorta descendens, 4a: truncus communis, 4b: truncus brachiocephalicus, 5: a. subclavia dextra, 6a: a. carotis communis sinistra, 6b: a. carotis communis dextra, 7: a. subclavia sinistra.
From the brachiocephalic trunk branches the left and subsequently the right common carotid artery. These arteries are laterally covered by the sternocleidomastoideus muscle. The internal jugular vein and vagal nerve are closely associated and lie just lateral to the artery. The common carotid artery divides into the internal and external carotid arteries at the mandibular angle. The former artery provides blood to the eye and the brains, while the latter gives off, amongst others, the linguofacial artery to continue as the maxillary artery.
The external jugular vein travels along the lateral aspect of the sternocleidomastoideus muscle and drains the venous blood from the head. This vein is suited for venipuncture. The accessory jugular vein lies parallel to the external jugular vein with which it fuses caudal to the collar bone. The caudal auricular veins, superficial temporal vein and maxillary vein drain into the external jugular vein. The facial vein drains partly into this vein, but mainly into the internal jugular vein. Both the external and internal jugular veins drain into the subclavian vein that in turn flow into the brachiocephalic vein. The cranial cava vein receives the left and right brachiocephalic veins.
In between the common carotid artery and the internal jugular vein lies the vagal nerve. It runs separately from the sympathetic trunk that lies deep against the cervical vertebrae. At the entrance of the thorax, the laryngeus recurrens nerve leaves the vagal nerve. The left sweeps around the aortic arch whereas the right makes a curvature around the right subclavian artery. The laryngeus recurrens nerve subsequently returns to the larynx, lateral to the trachea. Some major nerves and blood vessels of the rhesus monkey head are depicted in Figure 65.
A: Right lateral view of the rhesus monkey head of which the right side of the mandible has been removed with 1: n. lingualis, 2: n. vagus, 3: n. accessorius, 4: n. hypoglossus, 5: ansa cervicalis, 6: a. carotis communis, 7: a. lingualis. B: Right lateral view of a vascular corrosion cast of the rhesus monkey head with 1: a. facialis, 2: a. submentalis, 3: a. labialis superior, 4: a. nasalis lateralis, 5: a. angularis oculi, 6: a. temporalis superficialis, 7: vascular network of the parotid gland, 8: a. mentalis, 9: aa. temporales profundae, 10: v. facialis, 11: v. angularis oculi.
After crossing the 1st rib and giving off several branches to the head, neck, shoulder and thorax, the subclavian artery continues as the axillary artery that is accompanied by the axillary vein. The latter artery continues as the brachial artery after the a. subscapularis and a. circumflexa humeri cranialis have branched off. The brachial artery runs parallel to the n. medianus and gives off the a. profunda brachii as first branch. Subsequent branches are the collateralis ulnaris arteries that run collateral to the n. ulnaris. Just proximal to the elbow joint, the brachial artery splits into the radial and ulnar arteries. The former artery runs at the lateral side of the forearm towards the carpus where it gives origin to the dorsal and palmar arches. The ulnar artery joins the palmar arch. These arches supply the hand and fingers. Figures 66 and 68 present the discussed arteries.
Blood vessels and nerves of the thoracic limb. A: Medial view of the left upper arm with 1: a. brachialis, 2: a. collateralis ulnaris proximalis, 3: a. collateralis ulnaris distalis, 4: a. radialis, 5: n. medianus, 6: n. ulnaris. B: Medial/palmar view of the right forearm and hand with 1: n. medianus, 2: n. ulnaris, 3: ramus dorsalis (n. ulnaris), 4: nn. digitales palmares communes, 5: ramus superficialis (n. ulnaris), 6: a. ulnaris, 7: a. radialis, 8: arcus palmaris.
The venous circulation of the thoracic limbs consists of a deep and a superficial system. The deep system accompanies the arteries (e.g. v. subclavia, v. axillaris, v. brachialis), while the superficial veins have no arterial counterpart. In the rhesus monkey, the superficial venous system is poorly developed since the venous drainage of the hand and forearm is mainly provided by paired vv. comitantes. The cephalic vein, which is located at the cranial side of the antebrachium, is the major superficial vein of the forelimb. It forms a common stem with the accessory jugular vein that drains into the external jugular vein. It can be used for venipuncture, but is not preferred in the rhesus monkey (Figure 67).
Medial (A) and dorsal (B) views of the thoracic limb showing 1: v. brachialis, 2: n. medianus, 3: v. cephalica, 4: n. cutaneus brachii medialis, 5: n. cutaneus antebrachii medialis.
The nerves of the forelimb originate from the brachial plexus (C5 – T2) at the medial side of the upper arm. The thoracodorsal nerve innervates the latissimus dorsi muscle. The axillary nerve finds its way from medial to lateral superficially in the angle between the coracobrachialis and teres major muscles and deeper between the triceps and teres minor muscles to innervate the flexor muscles of the shoulder (deltoid, coracobrachialis and both teres muscles). The radial nerve runs from medial to lateral between the lateral and medial heads of the triceps muscle and perforates the brachioradialis muscle. Its muscular branches innervate the triceps and anconeus muscles as well as the extensor musculature of the upper arm, forearm and hand. The musculocutaneus nerve innervates the flexor muscles of the elbow joint (rami musculares to the coracobrachialis, biceps brachii and brachialis muscles). The median nerve runs parallel to the brachial artery in between the biceps brachii and brachialis muscle. More distally, it lies deep to the flexor muscles of the forearm, which it innervates. Its most distal branches are the digital nerves. The ulnar nerve can be found between the medial and long head of the triceps muscle. It crosses the elbow region in between the flexor carpi ulnaris and flexor digitorum profundus muscles to reach the hand. Its dorsal, superficial and deep branches innervate the flexor musculature of the fingers in addition to the median nerve. The n. cutaneus brachii et antebrachii medialis runs initially parallel to the ulnar nerve. The brachial and antebrachial branches innervate the skin at the medial sides of the upper and lower arm, respectively. The here discussed nerves are depicted in Figures 66–68.
Medial views of the nerves and blood vessels of the right forelimb. A: Plexus brachialis at the level of the shoulder joint with 1: n. thoracodorsalis, 2: n. axillaris, 3: n. radialis, 4: rami musculares, 5: n. musculocutaneus, 6: n. medianus, 7: n. ulnaris, 8: n. cutaneus brachii et antebrachii medialis, 9: a. axillaris, 10: a. circumflexa humeri cranialis, 11: a. subscapularis, 12: a. profunda brachii, 13: a. brachialis. B: Blood vessels and nerves at the level of the elbow joint with 1: n. medianus, 2: n. ulnaris, 3: n. musculocutaneus, 4: n. cutaneus brachii et antebrachii medialis, 5: Rami musculares, 6: n. cutaneus antebrachii lateralis, 7: n. radialis, 8: a. brachialis, 9: a. radialis, 10: a. ulnaris.
In this paragraph, some essential data on the ramifications of the abdominal aorta and caudal vena cava will be shared. As regards the arterial system that is depicted in Figure 69, it should be noticed that the truncus celiacus is very short and soon divides into the common hepatic artery, the gastrolienalis artery and the cranial mesenteric artery. The common hepatic artery branches into the a. hepatica propria that supplies the liver and arteries for the stomach, pancreas and duodenum. The a. gastrolienalis subsequently divides into the a. lienalis and a. gastrica sinistra. The a. mesenterica cranialis ramifies into the jejunal, ileal and colic arteries. Only approximately 1 cm caudal to the celiac trunk branches the right renal artery off the abdominal aorta. The left renal artery can be found a few mm more caudal. The caudal mesenteric artery branches off a few cm caudal to the left renal artery. This artery ramifies into the a. colica sinistra, a. sigmoidea and a. rectalis cranialis. Just cranial to the terminal bifurcation of the abdominal aorta into the common iliac arteries can the origin of the a. circumflexa ilium profunda be found.
Corrosion cast of the abdominal arteries, ventral view. 1: aorta abdominalis, 2: a. renalis dextra, 3: a. renalis sinistra, 4: a. adrenalis, 5: truncus celiacus, 6: a. hepatica communis, 7: a. gastrolienalis, 8: a. gastrica, 9: a. lienalis, 10: a. mesenterica cranialis, 11: aa. jejunales et ileales, 12: a. mesenterica caudalis, 13: a. circumflexa ilium profunda, 14: a. iliaca communis sinistra, 15: a. iliaca comunis dextra, 16: a. iliaca externa sinistra, 17: a. iliaca interna sinistra, 18: a. iliaca interna dextra, 19: a. iliaca externa dextra.
Regarding the venous system, the reader should be reminded of the fact that the arterial truncus celiacus has no venous counterpart. The portal vein is described above (Figure 51). The veins of the caudal segment of the caudal vena cava can be studied by means of Figure 70.
Latex cast of the caudal segment of the caudal cava vein of the male rhesus monkey, ventral view. 1: v. cava caudalis, 2a: v. renalis dextra, 2b: v. renalis sinistra, 3: v. adrenalis sinistra, 4a: v. testicularis dextra, 4b: v. testicularis sinistra, 5: v. mesenterica caudalis, 6a: v. circumflexa ilium profunda dextra, 6b: v. circumflexa ilium profunda sinistra, 7a: v. iliaca communis dextra, 7b: v. iliaca communis sinistra, 8a: v. iliaca externa dextra, 8b: v. iliaca externa sinistra, 9a: v. profunda femoris dextra, 9b: v. profunda femoris sinistra, 10a: v. circumflexa femoris lateralis dextra, 10b: v. circumflexa femoris lateralis sinistra, 11a: v. femoralis dextra, 11b: v. femoralis sinistra, 12a: v. iliaca interna dextra, 12b: v. iliaca interna sinistra, 13a + 14a: v. gluteus cranialis superficialis dextra, 13b + 14b: v. gluteus cranialis superficialis sinistra, 15a + 15b: Continuation of v. iliaca interna dextra et sinistra, 16a: v. obturatoria dextra, 16b: v. obturatoria sinistra.
The abdominal aorta divides into the left and right common iliac arteries within the pelvic cavity. These arteries subsequently divide into the external and internal iliac arteries (Figure 69). In the proximal part of the thigh, the external iliac artery continues as the femoral artery, which is suitable for palpation of the pulse, after the a. profunda femoris has branched off. This artery gives origin to the lateral circumflex artery, which branches supply the vasti muscles. The femoral artery then divides into the saphena artery and the popliteal artery. The latter artery runs deep between both heads of the gastrocnemius muscle and gives the medial and lateral a. genus distalis as branches. These branches supply the knee region together with the a. genus proximalis of the a. saphena. This artery emerges in the angle formed by the sartorius and gracilis muscles and runs superficially to the medial side of the tibia. She subsequently migrates to the cranial aspect of the tarsus to become the a. dorsalis pedis (superficialis et profunda). From the popliteal artery branches the a. tibialis cranialis. She becomes the a. tibialis caudalis at the level of the lower leg. At the level of the foot, the a. tibialis caudalis divides into the a. plantaris lateralis et medialis. The arterial and nerve system of the hind limb are visualized in Figures 71 and 73.
Vasculature and nerves of the pelvic limb. A: Dorsomedial view of the right upper leg with 1: a. femoralis, 2: a. circumflexa femoris lateralis, 3: a. profunda femoris, 4: n. femoralis, 5: rami cutanei craniales, 6: n. saphenus. B: Medial view of the thigh and knee of the left leg with 1: a. femoralis, 2: a. genus proximalis, 3: a. saphena: 4: a. dorsalis pedis profunda: 5: a. dorsalis pedis superficialis, 6: n. saphenus. C: Caudal view of the popliteal region of the left leg with 1: a. poplitea, 2: a. tibialis cranialis, 3: a. tibialis caudalis, 4: n. tibialis.
In analogy with the thoracic limb, the venous drainage of the pelvic limb is mainly effectuated by the vv. comitantes. The vv. marginalis medialis et lateralis pedis drain the dorsal side of the foot. The v. marginalis medialis pedis drains into the superficially located v. saphena magna that proximately flows into the femoral vein. The v. marginalis lateralis pedis drains into the v. saphena parva. It is an important vein as it drains the larger part of the hind leg and is suitable for venipuncture at the caudal aspect of the calf (Figure 72). In the popliteal fossa, she drains into the popliteal vein. This vein runs adjacent to the eponymous artery and flows into the femoral vein. This vein is also suitable for venipuncture. The femoral vein proximally drains into the external iliac vein that in turn flows into the common iliac vein.
Superficial veins of the pelvic limb. A: Subcutaneous localization of the v. saphena parva. B: Catheterization of the v. saphena parva.
The nerves of the hind limb originate from the lumbosacral plexus. The femoral nerve is associated with the eponymous blood vessels. Its muscular branches innervate the extensor muscles of the knee. In addition, cranial cutaneous branches innervate the skin at the craniomedial side of the upper leg and the medial side of the knee. The distal continuation of the femoral nerve is the n. saphenus that accompanies the a. saphena and innervates the skin at the craniomedial aspect of the lower leg. The n. gluteus caudalis, that innervates the m. gluteus superficialis, emerges together with the sciatic nerve. This nerve divides into the n. fibularis communis and n. tibialis. The former nerve deviates towards the lateral head of the gastrocnemius muscle. Halfway the upper leg, the n. cutaneus surae lateralis branches off to innervate the skin at the caudolateral side of the lower leg. Here, nerve biopsy can be performed. At the level of the knee, the n. fibularis communis divides into the n. fibularis superficialis et profundus. The latter travels deep to the fibularis longus and extensor digitorum longus muscles to innervate the flexors of the tarsal joint and the extensors of the toes. The former gives off ramifications to the fibularis muscles and branches into the skin at the dorsolateral side of the foot. The tibial nerve presents several ramifications at the level of the knee. The majority migrate between the heads of the gastrocnemius muscle to innervate the popliteus muscle, the extensors of the tarsal joint and the flexor musculature of the toes. A specific branch, the n. cutaneus surae caudalis, innervates the skin at the caudal side of the lower leg. More distally, it runs more laterally and is then called the n. suralis. Just proximal to the medial ankle, the tibial nerve divides into the medial and lateral plantar nerves. The n. flexoris femoris runs adjacent to the proximal part of the tibial nerve and branches into the hamstrings.
Nerves and blood vessels of the right pelvic limb. Laterocaudal view of the right knee with 1: n. tibialis, 2: n. cutaneus surae medialis, 3: rami musculares, 4: n. fibularis communis, 5: n. cutaneus surae lateralis. B: Laterocaudal, superficial view of the lower leg with 1: n. fibularis profundus, 2: n. fibularis superficialis, 3: n. cutaneus pedis dorsalis medialis, 4: n. cutaneus pedis dorsalis intermedius. C: Laterocaudal, deep view of the lower leg with 1: n. tibialis, 2: n. cutaneus surae medialis, 3: n. suralis, 4: n. fibularis communis, 5: a. et v. poplitea, 6: v. saphena parva.
The authors would like to thank Carlien Blockhuys (DVM), Lotte Joosten (DVM), Olga Kopilova (DVM), Caroline Mertens (DVM) and Gwenny Van Acoleyen (DVM) for their preliminary dissections that formed the basis of this chapter, and professor Jan Langermans (PhD) and Thea de Koning for critical reading and editing.
The Internet has irrevocably changed the dynamics of scholarly communication and publishing. Consequently, we find it necessary to indicate, unambiguously, our definition of what we consider to be a published scientific work.
",metaTitle:"Prior Publication Policy",metaDescription:"Prior Publication Policy",metaKeywords:null,canonicalURL:"/page/prior-publication-policy",contentRaw:'[{"type":"htmlEditorComponent","content":"A significant number of working papers, early drafts, and similar work in progress are openly shared online between members of the scientific community. It has become common to announce one’s own research on a personal website or a blog to gather comments and suggestions from other researchers. Such works and online postings are, indeed, published in the sense that they are made publicly available. However, this does not mean that if submitted for publication by IntechOpen they are not original works. We differentiate between reviewed and non-reviewed works when determining whether a work is original and has been published in a scholarly sense or not.
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\\n"}]'},components:[{type:"htmlEditorComponent",content:'A significant number of working papers, early drafts, and similar work in progress are openly shared online between members of the scientific community. It has become common to announce one’s own research on a personal website or a blog to gather comments and suggestions from other researchers. Such works and online postings are, indeed, published in the sense that they are made publicly available. However, this does not mean that if submitted for publication by IntechOpen they are not original works. We differentiate between reviewed and non-reviewed works when determining whether a work is original and has been published in a scholarly sense or not.
\n\nThe significance of Peer Review cannot be overstated when it comes to defining, in our terms, what constitutes a published scientific work. Peer Review is widely considered to be the cornerstone of modern publishing processes and the key value-adding contribution to a scholarly manuscript that a publisher can make.
\n\nOther than the issue of originality, research misconduct is another major issue that all publishers have to address. IntechOpen’s Retraction & Correction Policy and various publication ethics guidelines identify both redundant publication and (self)plagiarism to fall within the definition of research misconduct, thus constituting grounds for rejection or the issue of a Retraction if the work has already been published.
\n\nIn order to facilitate the tracking of a manuscript’s publishing history and its development from its earliest draft to the manuscript submitted, we encourage Authors to disclose any instances of a manuscript’s prior publication, whether it be through a conference presentation, a newspaper article, a working paper publicly available in a repository or a blog post.
\n\nA note to the Academic Editor containing detailed information about a submitted manuscript’s previous public availability is the preferred means of reporting prior publication. This helps us determine if there are any earlier versions of a manuscript that should be disclosed to our readers or if any of those earlier versions should be cited and listed in a manuscript’s references.
\n\nSome basic information about the editorial treatment of different varieties of prior publication is laid out below:
\n\n1. CONFERENCE PAPERS & PRESENTATIONS
\n\nGiven that conference papers and presentations generally pass through some sort of peer or editorial review, we consider them to be published in the accepted scholarly sense, particularly if they are published as a part of conference proceedings.
\n\nAll submitted manuscripts originating from a previously published conference paper must contain at least 50% of new original content to be accepted for review and considered for publication.
\n\nAuthors are required to report any links their manuscript might have with their earlier conference papers and presentations in a note to the Academic Editor, as well as in the manuscript itself. Additionally, Authors should obtain any necessary permissions from the publisher of their conference paper if copyright transfer occurred during the publishing process. Failure to do so may prevent Us from publishing an otherwise worthy work.
\n\n2. NEWSPAPER & MAGAZINE ARTICLES
\n\nNewspaper and magazine articles usually do not pass through any extensive peer or editorial review and we do not consider them to be published in the scholarly sense. Articles appearing in newspapers and magazines rarely possess the depth and structure characteristic of scholarly articles.
\n\nSubmitted manuscripts stemming from a previous newspaper or magazine article will be accepted for review and considered for publication. However, Authors are strongly advised to report any such publication in an accompanying note to the External Editor.
\n\nAs with the conference papers and presentations, Authors should obtain any necessary permissions from the newspaper or magazine that published the work, and indicate that they have done so in a note to the External Editor.
\n\n3. GREY LITERATURE
\n\nWhite papers, working papers, technical reports and all other forms of papers which fall within the scope of the ‘Luxembourg definition’ of grey literature do not pass through any extensive peer or editorial review and we do not consider them to be published in the scholarly sense.
\n\nAlthough such papers are regularly made publicly available via personal websites and institutional repositories, their general purpose is to gather comments and feedback from Authors’ colleagues in order to further improve a manuscript intended for future publication.
\n\nWhen submitting their work, Authors are required to disclose the existence of any publicly available earlier drafts in a note to the Academic Editor. In cases where earlier drafts of the submitted version of the manuscript are publicly available, any overlap between the versions will generally not be considered an instance of self-plagiarism.
\n\n4. SOCIAL MEDIA, BLOG & MESSAGE BOARD POSTINGS
\n\nWe feel that social media, blogs and message boards are generally used with the same intention as grey literature, to formulate ideas for a manuscript and gather early feedback from like-minded researchers in order to improve a particular piece of work before submitting it for publication. Therefore, we do not consider such internet postings to be publication in the scholarly sense.
\n\nNevertheless, Authors are encouraged to disclose the existence of any internet postings in which they outline and describe their research or posted passages of their manuscripts in a note to the Academic Editor. Please note that we will not strictly enforce this request in the same way that we would instructions we consider to be part of our conditions of acceptance for publication. We understand that it may be difficult to keep track of all one’s internet postings in which the researcher´s current work might be mentioned.
\n\nIn cases where there is any overlap between the Author´s submitted manuscript and related internet postings, we will generally not consider it to be an instance of self-plagiarism. This also holds true for any co-Author as well.
\n\nFor more information on this policy please contact permissions@intechopen.com.
\n\nPolicy last updated: 2017-03-20
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Full deployment of the FFMSR should make the entire fuel cycle infrastructures needless except the HLW disposal site.",book:{id:"9888",slug:"nuclear-power-plants-the-processes-from-the-cradle-to-the-grave",title:"Nuclear Power Plants",fullTitle:"Nuclear Power Plants - The Processes from the Cradle to the Grave"},signatures:"Yasuo Hirose",authors:[{id:"315264",title:"Dr.",name:"Yasuo",middleName:null,surname:"Hirose",slug:"yasuo-hirose",fullName:"Yasuo Hirose"}]},{id:"72177",doi:"10.5772/intechopen.92547",title:"Nuclear Power Plant or Solar Power Plant",slug:"nuclear-power-plant-or-solar-power-plant",totalDownloads:701,totalCrossrefCites:2,totalDimensionsCites:3,abstract:"Both solar energy and nuclear energy face significant economic challenges. Sustainable energy costs have traditionally been greater than any of those associated with the growth of fossil fuel power generation, although the costs of renewable energy technologies (especially photovoltaic) have dropped. Furthermore, capital costs remain a big challenge in the nuclear generation. In many nations, the cost of building small nuclear power plants is quite large due to time, technology, and environmental and safety challenges for consumers. Such problems might not be as big for state-owned corporations or controlled industries for which utilities have quick access to cheap resources, and this partially explains why the interest for nuclear reactors in Asia is far greater than in the United States or Europe. Learning could help decrease costs for both types of technologies, but the track record for learning-by-doing in the nuclear sector is not good.",book:{id:"9888",slug:"nuclear-power-plants-the-processes-from-the-cradle-to-the-grave",title:"Nuclear Power Plants",fullTitle:"Nuclear Power Plants - The Processes from the Cradle to the Grave"},signatures:"Mostafa Esmaeili Shayan and Farzaneh Ghasemzadeh",authors:[{id:"317852",title:"Ph.D.",name:"Mostafa",middleName:null,surname:"Esmaeili Shayan",slug:"mostafa-esmaeili-shayan",fullName:"Mostafa Esmaeili Shayan"},{id:"319145",title:"Prof.",name:"Farzaneh",middleName:null,surname:"Ghasemzadeh",slug:"farzaneh-ghasemzadeh",fullName:"Farzaneh Ghasemzadeh"}]},{id:"54655",doi:"10.5772/67858",title:"Key Technical Performance Indicators for Power Plants",slug:"key-technical-performance-indicators-for-power-plants",totalDownloads:3359,totalCrossrefCites:1,totalDimensionsCites:3,abstract:"In this chapter, we will underline the importance of the key performance indicators (KPIs) computation for power plants’ management. The main scope of the KPIs is to continuously monitor and improve the business and technological processes. Such indicators show the efficiency of a process or a system in relation with norms, targets or plans. They usually provide investors and stakeholders a better image regarding location, equipment technology, layout and design, solar and wind exposure in case of renewable energy sources and maintenance strategies. We will present the most important KPIs such as energy performance index, compensated performance ratio, power performance index, yield, and performance, and we will compare these KPIs in terms of relevance and propose a set of new KPIs relevant for maintenance activities. We will also present a case study of a business intelligence (BI) dashboard developed for renewable power plant operation in order to analyze the KPIs. The BI solution contains a data level for data management, an analytical model with KPI framework and forecasting methods based on artificial neural networks (ANN) for estimating the generated energy from renewable energy sources and an interactive dashboard for advanced analytics and decision support.",book:{id:"5807",slug:"recent-improvements-of-power-plants-management-and-technology",title:"Recent Improvements of Power Plants Management and Technology",fullTitle:"Recent Improvements of Power Plants Management and Technology"},signatures:"Simona Vasilica Oprea and Adela Bâra",authors:[{id:"139804",title:"Prof.",name:"Adela",middleName:null,surname:"Bara",slug:"adela-bara",fullName:"Adela Bara"},{id:"188586",title:"Dr.",name:"Simona Vasilica",middleName:null,surname:"Oprea",slug:"simona-vasilica-oprea",fullName:"Simona Vasilica Oprea"}]},{id:"55841",doi:"10.5772/intechopen.68772",title:"Risk Assessment of NPP Safety in Case of Emergency Situations on Technology",slug:"risk-assessment-of-npp-safety-in-case-of-emergency-situations-on-technology",totalDownloads:1355,totalCrossrefCites:0,totalDimensionsCites:2,abstract:"The last accidents of the nuclear power plant (NPP) in Chernobyl and Fukushima give us the new inspiration to verify the safety level of the NPP structures. This paper presents the new requirements to test the safety and reliability of the NPP structures due to the recent accidents in the world. The IAEA in Vienna required in the document ‘Stress tests’ the verification of the safety of the NPP structures under impact of the extreme loads as the earthquakes, the extreme climatic actions and the technology accidents. The new recommendations to load combinations and design criteria were defined. The risk assessment to verify the safety and reliability of the NPP structures based on probabilistic and nonlinear analysis is presented. The uncertainties of material model (behaviour of the reinforcement and liner, concrete cracking and crushing), degradation effects, the loads level (dead and live loads, extreme climatic and accidental temperature and overpressure) as well as other effects following from the inaccuracy of the calculated model and numerical methods were taken into account in the response surface method (RSM) method. The results of the deterministic and probabilistic analysis of the NPP structures are presented.",book:{id:"5807",slug:"recent-improvements-of-power-plants-management-and-technology",title:"Recent Improvements of Power Plants Management and Technology",fullTitle:"Recent Improvements of Power Plants Management and Technology"},signatures:"Juraj Králik",authors:[{id:"139600",title:"Prof.",name:"Juraj",middleName:null,surname:"Králik",slug:"juraj-kralik",fullName:"Juraj Králik"}]}],mostDownloadedChaptersLast30Days:[{id:"54655",title:"Key Technical Performance Indicators for Power Plants",slug:"key-technical-performance-indicators-for-power-plants",totalDownloads:3355,totalCrossrefCites:1,totalDimensionsCites:3,abstract:"In this chapter, we will underline the importance of the key performance indicators (KPIs) computation for power plants’ management. The main scope of the KPIs is to continuously monitor and improve the business and technological processes. Such indicators show the efficiency of a process or a system in relation with norms, targets or plans. They usually provide investors and stakeholders a better image regarding location, equipment technology, layout and design, solar and wind exposure in case of renewable energy sources and maintenance strategies. We will present the most important KPIs such as energy performance index, compensated performance ratio, power performance index, yield, and performance, and we will compare these KPIs in terms of relevance and propose a set of new KPIs relevant for maintenance activities. We will also present a case study of a business intelligence (BI) dashboard developed for renewable power plant operation in order to analyze the KPIs. The BI solution contains a data level for data management, an analytical model with KPI framework and forecasting methods based on artificial neural networks (ANN) for estimating the generated energy from renewable energy sources and an interactive dashboard for advanced analytics and decision support.",book:{id:"5807",slug:"recent-improvements-of-power-plants-management-and-technology",title:"Recent Improvements of Power Plants Management and Technology",fullTitle:"Recent Improvements of Power Plants Management and Technology"},signatures:"Simona Vasilica Oprea and Adela Bâra",authors:[{id:"139804",title:"Prof.",name:"Adela",middleName:null,surname:"Bara",slug:"adela-bara",fullName:"Adela Bara"},{id:"188586",title:"Dr.",name:"Simona Vasilica",middleName:null,surname:"Oprea",slug:"simona-vasilica-oprea",fullName:"Simona Vasilica Oprea"}]},{id:"55019",title:"Spatial Aspects of Environmental Impact of Power Plants",slug:"spatial-aspects-of-environmental-impact-of-power-plants",totalDownloads:1323,totalCrossrefCites:0,totalDimensionsCites:1,abstract:"Strategic Environmental Assessment (SEA) is one of the key instruments for implementing sustainable development strategies in planning in general, namely for analysing and assessing the spatial development concepts, in this case in the field of energy and planning of power plants. The SEA in energy sector planning has become a tool for considering the benefits and consequences of the proposed changes in space, also taking into account the capacity of space to sustain the implementation of the planned activities. This chapter examines the multi-criteria evaluation (MCE) method for carrying out an SEA for the power plants in Energy Sector Development Strategy of the Republic of Serbia (case study). The MCE method has found its use in the analysis and assessment of the energy sector spatial impacts on the environment and elements of sustainable development and, in this context, also considering the importance of impacts, spatial dispersion of impacts, their probability and frequency of occurrence, along with the elaboration of the obtained results in a specific, simple and unambiguous way. The chapter focuses on the consideration of aspects of environmental impact of all kinds of power plants, without taking into account the details regarding other aspects of energy sector development that are dealt with in the case study.",book:{id:"5807",slug:"recent-improvements-of-power-plants-management-and-technology",title:"Recent Improvements of Power Plants Management and Technology",fullTitle:"Recent Improvements of Power Plants Management and Technology"},signatures:"Boško Josimović and Saša Milijić",authors:[{id:"125578",title:"Dr.",name:"Bosko",middleName:null,surname:"Josimovic",slug:"bosko-josimovic",fullName:"Bosko Josimovic"},{id:"200736",title:"Dr.",name:"Sasa",middleName:null,surname:"Milijic",slug:"sasa-milijic",fullName:"Sasa Milijic"}]},{id:"64317",title:"Hybrid Power Plants: A Case Study",slug:"hybrid-power-plants-a-case-study",totalDownloads:1161,totalCrossrefCites:0,totalDimensionsCites:0,abstract:"Energy can be treated as an essential element for the development of society. Therefore, aspects like process’ efficiency and environmental impacts must be considered when choosing the supply source. In Brazil, an event showed the fragility of a system that relies on in only one source to attend their necessities; a truckers strike made the whole country stop. The energy sector has a similar situation; more than 60% of Brazilian energetic matrix is represented by one source, hydroelectric power plants. The availability of solar radiation and wind in Brazil makes it possible to diversify its energetic matrix. Thus, the aim of this study is investigating the potential of hybrid solar-wind power plants in two basins of Minas Gerais—Brazil, São Francisco Basin and Jequitinhonha Basin, as well as compare their viabilities in order to address social issues. By analyzing INMET database and economic factors, the study has shown that it is feasible to implement renewable power plants in the basins of the study area, whether individually (solar or wind energy) or hybrid system. It shows in addition that hybrid system should be prioritized, since it presents lower cost, when compared to solar power plant, and more reliability due to seasonality of both sources.",book:{id:"6838",slug:"power-plants-in-the-industry",title:"Power Plants in the Industry",fullTitle:"Power Plants in the Industry"},signatures:"Eduarda Moreira Nascimento, Júnio de Souza Damasceno and\nSabrinne Kelly Souza",authors:[{id:"252477",title:"Dr.",name:"Junio",middleName:null,surname:"Damasceno",slug:"junio-damasceno",fullName:"Junio Damasceno"},{id:"262354",title:"Ms.",name:"Sabrinne",middleName:"Kelly",surname:"Souza",slug:"sabrinne-souza",fullName:"Sabrinne Souza"},{id:"262363",title:"BSc.",name:"Eduarda",middleName:null,surname:"Nascimento",slug:"eduarda-nascimento",fullName:"Eduarda Nascimento"}]},{id:"58753",title:"Detection of Malfunctions and Abnormal Working Conditions of a Coal Mill",slug:"detection-of-malfunctions-and-abnormal-working-conditions-of-a-coal-mill",totalDownloads:1161,totalCrossrefCites:0,totalDimensionsCites:0,abstract:"Coal mill malfunctions are some of the most common causes of failing to keep the power plant crucial operating parameters or even unplanned power plant shutdowns. Therefore, an algorithm has been developed that enable online detection of abnormal conditions and malfunctions of an operating mill. Based on calculated diagnostic signals and defined thresholds, this algorithm informs about abnormal operating conditions. Diagnostic signals represent the difference between the measured and the modeled values of two selected mill operating parameters. Models of mill motor current and outlet temperature of pulverized fuel were developed based on the linear regression theory. Various data analysis and feature selection procedures have been performed to obtain the best possible model. The model based on linear regression has been compared with two alternative models. The algorithm validation was carried out based on historical data containing values of operating parameters from 10 months of mill operation. Historical data were downloaded from distributed control system (DCS) of a 200-MW coal-fired power plant. Tests carried out on historical data show that this algorithm can be successfully used to detect certain abnormal conditions and malfunctions of the operating mill, such as feeder blockage, lack of coal and mill overload.",book:{id:"6332",slug:"thermal-power-plants-new-trends-and-recent-developments",title:"Thermal Power Plants",fullTitle:"Thermal Power Plants - New Trends and Recent Developments"},signatures:"Teresa Kurek, Konrad Wojdan, Daniel Nabagło and Konrad Świrski",authors:[{id:"179942",title:"MSc.",name:"Daniel",middleName:null,surname:"Nabagło",slug:"daniel-nabaglo",fullName:"Daniel Nabagło"},{id:"212957",title:"Dr.",name:"Teresa",middleName:null,surname:"Kurek",slug:"teresa-kurek",fullName:"Teresa Kurek"},{id:"212961",title:"Dr.",name:"Konrad",middleName:null,surname:"Wojdan",slug:"konrad-wojdan",fullName:"Konrad Wojdan"},{id:"212962",title:"Prof.",name:"Konrad",middleName:null,surname:"Świrski",slug:"konrad-swirski",fullName:"Konrad Świrski"},{id:"212963",title:"MSc.",name:"Łukasz",middleName:null,surname:"Śladewski",slug:"lukasz-sladewski",fullName:"Łukasz Śladewski"}]},{id:"72177",title:"Nuclear Power Plant or Solar Power Plant",slug:"nuclear-power-plant-or-solar-power-plant",totalDownloads:700,totalCrossrefCites:2,totalDimensionsCites:3,abstract:"Both solar energy and nuclear energy face significant economic challenges. Sustainable energy costs have traditionally been greater than any of those associated with the growth of fossil fuel power generation, although the costs of renewable energy technologies (especially photovoltaic) have dropped. Furthermore, capital costs remain a big challenge in the nuclear generation. In many nations, the cost of building small nuclear power plants is quite large due to time, technology, and environmental and safety challenges for consumers. Such problems might not be as big for state-owned corporations or controlled industries for which utilities have quick access to cheap resources, and this partially explains why the interest for nuclear reactors in Asia is far greater than in the United States or Europe. Learning could help decrease costs for both types of technologies, but the track record for learning-by-doing in the nuclear sector is not good.",book:{id:"9888",slug:"nuclear-power-plants-the-processes-from-the-cradle-to-the-grave",title:"Nuclear Power Plants",fullTitle:"Nuclear Power Plants - The Processes from the Cradle to the Grave"},signatures:"Mostafa Esmaeili Shayan and Farzaneh Ghasemzadeh",authors:[{id:"317852",title:"Ph.D.",name:"Mostafa",middleName:null,surname:"Esmaeili Shayan",slug:"mostafa-esmaeili-shayan",fullName:"Mostafa Esmaeili Shayan"},{id:"319145",title:"Prof.",name:"Farzaneh",middleName:null,surname:"Ghasemzadeh",slug:"farzaneh-ghasemzadeh",fullName:"Farzaneh Ghasemzadeh"}]}],onlineFirstChaptersFilter:{topicId:"803",limit:6,offset:0},onlineFirstChaptersCollection:[],onlineFirstChaptersTotal:0},preDownload:{success:null,errors:{}},subscriptionForm:{success:null,errors:{}},aboutIntechopen:{},privacyPolicy:{},peerReviewing:{},howOpenAccessPublishingWithIntechopenWorks:{},sponsorshipBooks:{sponsorshipBooks:[],offset:8,limit:8,total:0},allSeries:{pteSeriesList:[{id:"14",title:"Artificial Intelligence",numberOfPublishedBooks:9,numberOfPublishedChapters:90,numberOfOpenTopics:6,numberOfUpcomingTopics:0,issn:"2633-1403",doi:"10.5772/intechopen.79920",isOpenForSubmission:!0},{id:"7",title:"Biomedical Engineering",numberOfPublishedBooks:12,numberOfPublishedChapters:108,numberOfOpenTopics:3,numberOfUpcomingTopics:0,issn:"2631-5343",doi:"10.5772/intechopen.71985",isOpenForSubmission:!0}],lsSeriesList:[{id:"11",title:"Biochemistry",numberOfPublishedBooks:33,numberOfPublishedChapters:330,numberOfOpenTopics:4,numberOfUpcomingTopics:0,issn:"2632-0983",doi:"10.5772/intechopen.72877",isOpenForSubmission:!0},{id:"25",title:"Environmental Sciences",numberOfPublishedBooks:1,numberOfPublishedChapters:19,numberOfOpenTopics:4,numberOfUpcomingTopics:0,issn:"2754-6713",doi:"10.5772/intechopen.100362",isOpenForSubmission:!0},{id:"10",title:"Physiology",numberOfPublishedBooks:14,numberOfPublishedChapters:145,numberOfOpenTopics:4,numberOfUpcomingTopics:0,issn:"2631-8261",doi:"10.5772/intechopen.72796",isOpenForSubmission:!0}],hsSeriesList:[{id:"3",title:"Dentistry",numberOfPublishedBooks:9,numberOfPublishedChapters:140,numberOfOpenTopics:2,numberOfUpcomingTopics:0,issn:"2631-6218",doi:"10.5772/intechopen.71199",isOpenForSubmission:!0},{id:"6",title:"Infectious Diseases",numberOfPublishedBooks:13,numberOfPublishedChapters:123,numberOfOpenTopics:4,numberOfUpcomingTopics:0,issn:"2631-6188",doi:"10.5772/intechopen.71852",isOpenForSubmission:!0},{id:"13",title:"Veterinary Medicine and Science",numberOfPublishedBooks:11,numberOfPublishedChapters:112,numberOfOpenTopics:3,numberOfUpcomingTopics:0,issn:"2632-0517",doi:"10.5772/intechopen.73681",isOpenForSubmission:!0}],sshSeriesList:[{id:"22",title:"Business, Management and Economics",numberOfPublishedBooks:1,numberOfPublishedChapters:22,numberOfOpenTopics:3,numberOfUpcomingTopics:0,issn:"2753-894X",doi:"10.5772/intechopen.100359",isOpenForSubmission:!0},{id:"23",title:"Education and Human Development",numberOfPublishedBooks:0,numberOfPublishedChapters:11,numberOfOpenTopics:1,numberOfUpcomingTopics:1,issn:null,doi:"10.5772/intechopen.100360",isOpenForSubmission:!0},{id:"24",title:"Sustainable Development",numberOfPublishedBooks:1,numberOfPublishedChapters:19,numberOfOpenTopics:5,numberOfUpcomingTopics:0,issn:"2753-6580",doi:"10.5772/intechopen.100361",isOpenForSubmission:!0}],testimonialsList:[{id:"13",text:"The collaboration with and support of the technical staff of IntechOpen is fantastic. 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",coverUrl:"https://cdn.intechopen.com/series/covers/23.jpg",latestPublicationDate:"August 12th, 2022",hasOnlineFirst:!0,numberOfPublishedBooks:0,editor:{id:"280770",title:"Dr.",name:"Katherine K.M.",middleName:null,surname:"Stavropoulos",slug:"katherine-k.m.-stavropoulos",fullName:"Katherine K.M. Stavropoulos",profilePictureURL:"https://s3.us-east-1.amazonaws.com/intech-files/0030O00002bRdFuQAK/Profile_Picture_2022-05-24T09:03:48.jpg",biography:"Katherine Stavropoulos received her BA in Psychology from Trinity College, in Connecticut, USA and her Ph.D. in Experimental Psychology from the University of California, San Diego. She completed her postdoctoral work at the Yale Child Study Center with Dr. James McPartland. Dr. Stavropoulos’ doctoral dissertation explored neural correlates of reward anticipation to social versus nonsocial stimuli in children with and without autism spectrum disorders (ASD). She has been a faculty member at the University of California, Riverside in the School of Education since 2016. Her research focuses on translational studies to explore the reward system in ASD, as well as how anxiety contributes to social challenges in ASD. She also investigates how behavioral interventions affect neural activity, behavior, and school performance in children with ASD. She is also involved in the diagnosis of children with ASD and is a licensed clinical psychologist in California. She is the Assistant Director of the SEARCH Center at UCR and is a faculty member in the Graduate Program in Neuroscience.",institutionString:null,institution:{name:"University of California, Riverside",institutionURL:null,country:{name:"United States of America"}}},editorTwo:null,editorThree:null},subseries:{paginationCount:2,paginationItems:[{id:"89",title:"Education",coverUrl:"https://cdn.intechopen.com/series_topics/covers/89.jpg",isOpenForSubmission:!1,editor:{id:"260066",title:"Associate Prof.",name:"Michail",middleName:null,surname:"Kalogiannakis",slug:"michail-kalogiannakis",fullName:"Michail Kalogiannakis",profilePictureURL:"https://mts.intechopen.com/storage/users/260066/images/system/260066.jpg",biography:"Michail Kalogiannakis is an Associate Professor of the Department of Preschool Education, University of Crete, and an Associate Tutor at School of Humanities at the Hellenic Open University. He graduated from the Physics Department of the University of Crete and continued his post-graduate studies at the University Paris 7-Denis Diderot (D.E.A. in Didactic of Physics), University Paris 5-René Descartes-Sorbonne (D.E.A. in Science Education) and received his Ph.D. degree at the University Paris 5-René Descartes-Sorbonne (PhD in Science Education). His research interests include science education in early childhood, science teaching and learning, e-learning, the use of ICT in science education, games simulations, and mobile learning. He has published over 120 articles in international conferences and journals and has served on the program committees of numerous international conferences.",institutionString:"University of Crete",institution:{name:"University of Crete",institutionURL:null,country:{name:"Greece"}}},editorTwo:{id:"422488",title:"Dr.",name:"Maria",middleName:null,surname:"Ampartzaki",slug:"maria-ampartzaki",fullName:"Maria Ampartzaki",profilePictureURL:"https://mts.intechopen.com/storage/users/422488/images/system/422488.jpg",biography:"Dr Maria Ampartzaki is an Assistant Professor in Early Childhood Education in the Department of Preschool Education at the University of Crete. Her research interests include ICT in education, science education in the early years, inquiry-based and art-based learning, teachers’ professional development, action research, and the Pedagogy of Multiliteracies, among others. 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