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Ch 9 muscular system ecpi review questions and answers
Ch 9 muscular system ecpi review questions and answers
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Ch 9 muscular system ecpi reviewquestions and answers
Muscular system function - Answers -The body system that supports the body and
enables it to MOVE
thick filaments - Answers -composed of myosin
Thin filament - Answers -actin, troponin, tropomyosin
Connective tissue layer - Answers -epimysium, perimysium, endomysium
Epimysium - Answers -a sheath of fibrous elastic tissue surrounding a muscle.
Endomysium - Answers -allows their autonomous gliding during muscle contraction,
regulate the metabolic exchange between muscle and blood.
Perimysium - Answers -plays a role in transmitting lateral contractile movements.
Sarcolemma - Answers -plasma membrane of a muscle cell
T tubule - Answers -narrow tubes that are continuous with the sarcolemma and extend
into the sarcoplasm
Sarcoplasmic - Answers -Organelle of the muscle fiber that stores calcium.
Reticulum - Answers -a network or mesh of fibrils, fibers or filaments
Myofibril - Answers -tightly packed filament bundles found within skeletal muscle fibers
Sarcomere - Answers -a structural unit of a myofibril in striated muscle, consisting of a
dark band and the nearer half of each adjacent pale band.
Z line - Answers -A dark thin protein band to which actin filaments are attached in a
striated muscle fiber, marking the boundaries between adjacent sarcomeres.
I band - Answers -a light band composed of thin filaments only
A band - Answers -dark area; extends length of the thick filaments
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