The heart keeps on beating throughout the life withoutfatigue because: – InterviewSolution

InterviewSolution

1.	The heart keeps on beating throughout the life withoutfatigue because:(A) It contracts slowly(B) It has a resting or recovery period(C) It can use lactic acid as an extra source of energy(D) of the above
Answer» There is an inherit mechanism of relaxation after every contraction. It maybe in millisecond but it provides rest to the muscles.Option B.

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