PHYSIOLOGY
MUSCLE CONTRACTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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energy source for muscle
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atp
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phosphocreatine
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sarcomere
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tone
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Explanation:
Detailed explanation-1: -Adenosine triphosphate (ATP) is the primary source of chemical energy, and its hydrolysis is highly exergonic.
Detailed explanation-2: -The phosphocreatine (PC) system uses a substance called creatine phosphate to ‘glue’ or resynthesise the third phosphate molecule back on to ADP to make ATP.
Detailed explanation-3: -Three energy systems function to replenish ATP in muscle: (1) Phosphagen, (2) Glycolytic, and (3) Mitochondrial Respiration. The three systems differ in the substrates used, products, maximal rate of ATP regeneration, capacity of ATP regeneration, and their associated contributions to fatigue.
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