PHYSIOLOGY
MUSCLE CONTRACTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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citric acid
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lactic acid
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creatine
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myosin
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Detailed explanation-1: -Creatine has little effect on contractile function, whereas Pi, rather than acidosis, appears to be the most important cause of fatigue during high-intensity exercise.
Detailed explanation-2: -During heavy exercises or prolonged physical activity, there is a deficit of oxygen required to enable all the muscle cells to generate energy aerobically. Muscle cells then respire anaerobically and produces lactic acid. Accumulation of lactic acid in the muscles causes cramps.
Detailed explanation-3: -It assists in cell respiration, glucose production, and molecule signaling. Contrary to belief, lactic acid does not cause muscle soreness. However, the concentration of lactic acid in the blood does increase during exercise. High levels of lactic acid in the blood can lead to hyperlactatemia and lactic acidosis.