In the cardiac cycle, diastole is

The number of heart beats per minute

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The relaxation period after contraction of the heart

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The forceful pumping action of the heart

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The contraction period after relaxation of the heart

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Solution

The correct option is A The relaxation period after contraction of the heart
Cardiac diastole is the period of time when the heart relaxes after contraction in preparation for refilling with circulating blood. Ventricular diastole is when the ventricles are relaxing, while atrial diastole is when the atria are relaxing.
So, the correct answer is option B.

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