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422
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Which part of the myosin molecule sticks out to form the cross bridge?
422
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What are the two kinds of filaments in a myofibril called?
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What is the name of the repeating unit from one Z-line to the next in a myofibril?
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What is the loose connective tissue that surrounds individual muscle fibers?
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What is the name of the collagen and elastic fibers that surround each bundle of muscle fibers?
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Which muscle sheath surrounds the entire muscle and fuses with the tendon?
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What organelle in muscle cells provides energy for contraction?
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How many muscle fibers are approximately present in a single muscle?
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Which of the following is an example of vasoconstriction?
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Which of the following is NOT a function of the muscular system?
