PHYSIOLOGY
GENERAL PHYSIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Glucose
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Creatine
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ATP
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Oxygen
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Detailed explanation-1: -Three energy systems function to replenish ATP in muscle: (1) Phosphagen, (2) Glycolytic, and (3) Mitochondrial Respiration.
Detailed explanation-2: -Adenosine triphosphate (ATP) is the source of energy for all muscle contractions. Energy is released when ATP is broken into ADP+Pi (adenosine diphosphate and phosphate group). Maintaining the availability of ATP for muscle contraction is the limiting factor, since ATP is not stored in large amounts in skeletal muscle.
Detailed explanation-3: -The energy required for muscle contraction is provided by the breakdown of ATP but the amount of ATP in muscles cells is sufficient to power only a short duration of contraction.
Detailed explanation-4: -Key Points. ATP is required for muscle contraction. Four sources of this substance are available to muscle fibers: free ATP, phosphocreatine, glycolysis and cellular respiration. A small amount of free ATP is available in the muscle for immediate use.