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Q.
Accumulation of which of the following in muscle causes fatigue?
Locomotion and Movement
Solution:
The reduction in the force of contraction of a muscle after prolonged stimulation is called muscle fatigue. A Muscle is able to contract for a short time in the absence of oxygen. But it gets fatigued sooner because in the absence of oxygen, the metabolic products of glycolysis mainly lactic acid accumulate. The accumulation of lactic acid leads to muscle fatigue.