In humans, the volume of blood pumped out by each ventricle per minute is
A
3600 mL
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B
5040 mL
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C
2520 mL
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D
9360 mL
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Solution
The correct option is B 5040 mL Cardiac output is the volume of blood being pumped by the heart in a minute. It is equal to the heart rate multiplied by the stroke volume. During a cardiac cycle, each ventricle pumps out approximately 70 mL of blood. (Stroke volume)
Cardiac output = Stroke volume × Number of beats per minute = 70 mL × 72 = 5040 mL/min