First slide

Circulatory Pathways

Question

The cardiac output can be defined as the volume of blood pumped out by

Easy

A

each ventricle per each cardiac cycle
B

both the ventricles per cardiac cycle
C

each ventricle per minute
D

both the ventricles per minute

Solution

During a cardiac cycle, each ventricle pumps out approximately 70 mL of blood which is called the stroke volume. The stroke volume multiplied by the heart rate (no. of beats per min.) gives the cardiac output. Therefore, the cardiac output can be defined as the volume of blood pumped out by each ventricle per minute and averages 5000 mL or 5 litres in a healthy individual.

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