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CSCS Exam Study Questions & Answers | 200 Questions with 100% Correct Answers | Updated & Verified | 44 Pages

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A skeletal _________is made up of many __________, which contain muscle ___________or muscle ____________ that are multinucleated. Each of these contain _____________which are the primary intracellu... lar structure (cylindar shaped) which make up the _________and contain thick protein filaments called_______and thin protein filaments called_________. Myosin filament contains globular heads called____ - ANS - skeletal muscle is made up of many fascicles, which contain muscle fibers or muscle cells that are multinucleated. Each of these contain myofibrils which are the primary intracellular structure (cylindar shaped) which make up the sarcomere and contain thick protein filaments called myosin and thin protein filaments called actin. Myosin contains globular heads call cross bridges. Endomysium=wraps each individual muscle fibre. Perimysium = wraps fasicles. Epimysium = wraps the whole muscle. Average sarcomere size - ANS - 2.2 microns The sarcoplasmic reticulum contains invaginations called_________________ which function to: - ANS - t tubules allow action potential across surface of cell into the cell or myofibril Sarcomere arrangment: I bands= A bands= Z line or disc= H zone= M Line= - ANS - I bands= actin, thin filaments A bands= myosin filaments and part of actin that overlaps (thick) Z line or disc= connect 1 sarcomere to another H zone=contains myosin only [Show More]

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