The myosin head pivots towards the M-line during the power stroke of muscle contraction immediately after:
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Step 1: The myosin head binds to actin, forming a cross-bridge. Show more…
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Muscle contraction occurs when the myosin cross bridges row along the length of the ______ filaments.
Adi S.
During which phase of the contraction cycle does the myosin head rotate toward the M line, causing a shortening of the sarcomere? O The Powerstroke O Formation of the crossbridges O Breaking of the crossbridges O Reorientation of the myosin head
In relaxed muscle, the myosin binding site on actin is blocked by _____. a. ATP b. tropomyosin c. the cross-bridge d. troponin
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