PHYSIOLOGY
MUSCLE CONTRACTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What provides the energy for muscle contraction during the first 4-5 seconds of exercise, or as an immediate reaction to a threat?
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Stored ATP
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Direct Phosphorylation (ATP-PCr)
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Anaerobic Glycolysis (Lactic Acid)
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Oxidative (Aerobic) Respiration
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Explanation:
Detailed explanation-1: -The source of energy that is used to power the movement of contraction in working muscles is adenosine triphosphate (ATP) – the body’s biochemical way to store and transport energy.
Detailed explanation-2: -So, the correct answer is ‘ATP’.
Detailed explanation-3: -During the first few seconds of exercise regardless of intensity, the ATP-PC system is relied on almost exclusively, with energy coming from the breakdown of the ATP stores within the muscles.
There is 1 question to complete.