In which situation, muscles are in oxygen debt ? How do they come out – InterviewSolution

InterviewSolution

1.	In which situation, muscles are in oxygen debt ? How do they come out of it ?
Answer» In vigrous exercise, the supply of oxygen to the muscle fibres becomes insufficient inspite of resulting faster breathing and quicker heart beat. In such a situation, glycogen breaks down to lactic acid faster than the rate at which the lactic acid is oxidized. As a result, lactic acid gets accumulated in the muscles and it leads to fatigue. The muscles are new in oxygen debt. Animal is compelled to give up intensive activity. During rest, faster breathing continues for sometime and it supplies extra oxygen to fatigued muscles for oxidising accumulated lactic acid. This results in disappearance of fatigue.

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