PHYSIOLOGY
MUSCLE CONTRACTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which directly contributes to a muscle contraction?
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Actin Pulls on the myosin
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Myosin Pulls on Actin
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Either A or B
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None of the above
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Explanation:
Detailed explanation-1: -Answer and Explanation: During muscle contraction, myosin is responsible for converting energy released from ATP into mechanical energy for the muscle to use.
Detailed explanation-2: -The motion of muscle shortening occurs as myosin heads bind to actin and pull the actin inwards. This action requires energy, which is provided by ATP. Myosin binds to actin at a binding site on the globular actin protein.
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