The heart beats continuously throughout life | vedclass

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Question

(B) The cardiac muscle fibers are unique because they have a long refractory period. During each cardiac cycle,the heart undergoes a period of relaxat

Vedclass · Accepted Answer

It gets time for rest and recovery.

Vedclass · Answer

(B) The cardiac muscle fibers are unique because they have a long refractory period. During each cardiac cycle,the heart undergoes a period of relaxation known as diastole. Even though the heart beats continuously,the duration of diastole (relaxation phase) is sufficient for the cardiac muscle to recover and replenish its oxygen and nutrient supplies. This period of rest between beats prevents the accumulation of fatigue-inducing metabolites,allowing the heart to function throughout an individual's life without tiring.

The heart beats continuously throughout life without fatigue because.....

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