NEET UG BIOLOGY MCQ: BODY FLUIDS AND CIRCULATION

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A person has cardiac output

5600 \mathrm{~ml} /

minute and stroke volume

70 \mathrm{~ml}

. What would be the number of heartbeats in 2 minutes in this person?

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Correct option: D

160 heart beats

Option D (160 heart beats) is correct because heart rate is cardiac output divided by stroke volume (5600 mL/min / 70 mL/beat = 80 beats/min). Therefore, in 2 minutes, the number of heartbeats is 80 beats/min * 2 min = 160 beats.

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