muscle tissue classification

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prezentatsiya powerpoint description of muscle tissue classification. struchture function, and regeneration. contractile structures (cells and fibers) muscular tissue nonmuscular myofibroblasts myoepithelial cells pericytes muscular tissue striated smooth skeletal cardiac (heart muscle, myocardium) development of muscular tissue myotomes – skeletal tissue splanchnotome – cardiac tissue neuroectoderm – myoneural tissue of the eye mesenchyme – smooth muscle tissue specialized compartments of muscular structures contractile apparatus supporting apparatus ca++ - storing membrane system myofibrils in striated muscles; dispersed myofilaments in smooth muscle cells. linking proteins of cytoplasm; external lamina (basal membrane); external connective tissue (fascia of skeletal muscles ….) sarcotubular system in striated muscles; cysternae of ser and caveoli in smooth muscle cells skeletal muscle tissue skeletal muscle fiber myosymplast multinucleate structure formed by fusion of many hundreds of myoblasts in development satellite cells precursor cells able to devide by mitosis to form new muscle after tissue damage surrounded by an external lamina …

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ues myofibrils – sarcotubular system relations triads of sarcotubular system the molecular basis of striated muscles contraction depolarization of plasma membrane and sarcotubular system release of ca++ into the cytoplasm via membrane channels binding of ca-ions to the troponin (troponin c) resulting in changes of troponin complex access of myosin to the actin filaments hydrolysis of atp contraction intercalated disks of cardiac muscle cells plasma membranes of cardiac cells, desmosomes, gap junctions, adherent-type junctions (fasciae anherens) structures histology of smooth muscles ca++- entry into cytoplasm of smooth muscle cell from smooth endoplasmic reticulum (vesicles like sarcotubular system of striated muscles) from extracellular spaces via hormones-dependent (ligand-gated) channenl via depolarization-dependent (voltage-gated) channels the molecular basis of smooth muscles contraction membrane excitation ca++ release into cytoplasm binding to the protein – calmodulin activation of enzime – myosin light-chane kinase phosphorylation of myosin access of myosin to the actin filaments contraction relaxed and …

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ctile focal relaxed filament density contracted

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prezentatsiya powerpoint description of muscle tissue classification. struchture function, and regeneration. contractile structures (cells and fibers) muscular tissue nonmuscular myofibroblasts myoepithelial cells pericytes muscular tissue striated smooth skeletal cardiac (heart muscle, myocardium) development of muscular tissue myotomes – skeletal tissue splanchnotome – cardiac tissue neuroectoderm – myoneural tissue of the eye mesenchyme – smooth muscle tissue specialized compartments of muscular structures contractile apparatus supporting apparatus ca++ - storing membrane system myofibrils in striated muscles; dispersed myofilaments in smooth muscle cells. linking proteins of cytoplasm; external lamina (basal membrane); external connective tissue (fascia of skeletal muscles ….) sarcotub...

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