Question

15. Kundan has come after running and now
he is feeling cramps in his leg muscles. Why?
a. Formation of lactic acid due to lack of
oxygen
b. Formation of lactic acid due to excess of
oxygen
c. Blood clotting
d. None of the above​

Answer 1

Answer:

a. Formation of lactic acid due to lack of

oxygen.

Explanation:

During heavy exercise, the demand for energy is high but the supply of oxygen to produce energy is limited. Therefore, anaerobic respiration takes places in the muscles cells to fulfil the demand for energy. This anaerobic breakdown of glucose leads to the formation of lactic acid in muscles. The accumulation of lactic acid in muscles leads to muscle cramps. HenceDuring heavy exercise, we get cramps in the legs due to the accumulation of Lactic acid.

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