Question

oxygen debt occurs in muscle when​

Answer 1

Answer:

If anaerobic activity takes place over a long period of time, the muscles soon become exhausted. This is due to a condition called oxygen debt.

Strenuous exercise uses up all ATP stores and causes a build-up of lactic acid.

This is a toxic (poisonous) substance which causes the muscles to stop working. Lactic acid can only be removed in the presence of oxygen and upon completion of hard strenuous exercise it is essential that the oxygen debt is repaid. Large amounts of oxygen are needed for this oxygen recovery. This is why we pant after hard exercise. In this way ATP stores are replenished and lactic acid removed from the muscular system.

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Answer 2

IF ANAEROBIC ACTIVITY TAKES PLACE OVER A LONG PERIOD OF TIME