In human beings, the duration of the cardiac cycle is

8.0 second

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0.08 second

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0.5 second

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0.8 second

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Solution

The correct option is D
0.8 second

The total period of the cardiac cycle is 0.8 seconds which includes a cardiac diastole of 0.4 seconds, a ventricular systole of 0.3 seconds and an atrial systole of 0.1 seconds.

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Doctors use stethoscope to hear the sound ; Produced during each cardiac cycle. The second sound is heard when:

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