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Soft palate, H&E.Muscle TissueJ. BendingerINDIANAUNIVERSITYSCHOOL OFMEDICINEHISTOLOGYATLAS2018Muscle TissueI.IntroductionII.KeywordsIII.SlidesA. Muscle1. Striateda. Skeletali.Developmentii.Structureiii. Organizationb. Cardiaci.Developmentii.Structureiii. Organization2. Smootha. Developmentb. Structurec. OrganizationB.Muscle-like cells1.Myoepithelial cells2. Myofibroblasts3. Myoid cells4. PericytesIV.Summary
Slide44 (NW): Cardiac Muscle, H&ESlide132 (NW): Small Intestine, H&ESlide92 (NW): Larynx, H&EMuscleis one of the four basic tissues of the body(with epithelium, connective, and nervous tissue).It is highly cellular and vascular tissue specializedfor contraction via the interaction of myofilaments.It is responsible for movement of the body andchanges in the size and shape of organs.Individual muscle fibers (cells) are categorized aseitherstriated(skeletal or cardiac) orsmoothbased upon the arrangement and appearance oftheir contractile myofilaments (actin and myosin).Muscle TissueI.IntroductionII.KeywordsIII.SlidesA. Muscle1. Striateda. Skeletali.Developmentii.Structureiii. Organizationb. Cardiaci.Developmentii.Structureiii. Organization2. Smootha. Developmentb. Structurec. OrganizationB.Muscle-like cells1.Myoepithelial cells2. Myofibroblasts3. Myoid cells4. PericytesIV.Summary
KeywordsA-bandBranching fibersCardiac muscleCross-striationsEndomysiumEpimysiumFascicleI-bandIntercalated discMuscle fiberMyoblastMyocardiumMyocytesMyofibrilsMyotubePerimysiumSarcolemmaSkeletal muscleSmooth muscleStriated muscleMuscle TissueI.IntroductionII.KeywordsIII.SlidesA. Muscle1. Striateda. Skeletali.Developmentii.Structureiii. Organizationb. Cardiaci.Developmentii.Structureiii. Organization2. Smootha. Developmentb. Structurec. OrganizationB.Muscle-like cells1.Myoepithelial cells2. Myofibroblasts3. Myoid cells4. PericytesIV.Summary
Slide 43 (NW): Muscle – 3 Types, H&ESlide OverviewCardiac muscleSmooth muscleSkeletal muscleCharacteristics:Cross-striationsCentral, round nucleusBranching fibersIntercalated discsCharacteristics:Central, elongated nucleusSpindle-shaped cellsCharacteristics:Cross-striationsPeripheral, elongated nucleiMuscle TissueI.IntroductionII.KeywordsIII.SlidesA.Muscle1. Striateda. Skeletali.Developmentii.Structureiii. Organizationb. Cardiaci.Developmentii.Structureiii. Organization2. Smootha. Developmentb. Structurec. OrganizationB.Muscle-like cells1.Myoepithelial cells2. Myofibroblasts3. Myoid cells4. PericytesIV.Summary
Slide 159: Fetal Mouse HeadLook in the oral cavity at thetongue to see developingskeletal muscleBrainCartilaginous nasal septumDeveloping bone of mandibleMesenchymeHair follicles in skinSlide OverviewAll muscle tissue arises from mesenchyme within various parts of the embryo and involves the formation ofmyocytes(either skeletal, cardiac, or smooth) frommyoblasts. However, the overall process is unique for each

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