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  4. If the heartbeat of a person is about 75 beats per minute, and stroke volume is 70 mL per minute, then the cardiac output will be

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Q. If the heartbeat of a person is about 75 beats per minute, and stroke volume is 70 mL per minute, then the cardiac output will be

NTA AbhyasNTA Abhyas 2022

Solution:

The stroke volume multiplied by the heart rate (no. of beats per min.) gives the cardiac output.
In the given question:
The stroke volume is 70 mL, while the heart rate is 75 beats per minute.
Cardiac output = Stroke volume x Heart rate
= 70 x 75 = 5250 mL