PHYSIOLOGY
MUSCLE CONTRACTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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This term refers to when myosin and actin contract to “pull the trigger".
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power stroke
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contraction phase
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relaxation phase
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isometric contraction
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Explanation:
Detailed explanation-1: -The myosin head then rebinds at a new position on the actin filament, resulting in the release of ADP and Pi and triggering the “power stroke, ‘’ in which the myosin head returns to its initial conformation, thereby sliding the actin filament toward the M line of the sarcomere.
Detailed explanation-2: -: the stroke in the cycle of an internal-combustion engine during which the piston is propelled by the pressure of the expanding steam or gases.
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