First slide

Circulatory Pathways

Question

During an exercise, the stroke volume of an athlete is 120 mL/beat and the heart rate is 100 beats/minute. The cardiac output during the exercise is

Easy

Solution

Cardiac output $=$ stroke volume $\times$ heart rate
Cardiac output during exercise $=$ $120 mL / beat \times 100 beats / \min$ $=$ $12000 mL / \min$ $=$ $12 L / \min$

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