A) heart rate
B) stroke volume
C) blood flow
D) Both [a] and [b]
Correct Answer: D
Solution :
Cardiac output is the volume of blood pumped by the ventricles per unit time. Cardiac output = Stroke Volume\[\times \]Heart rate = 70 mL/heart beat Stroke volume is volume of blood pumped out of the heart at each beat. Heart rate is numbers of beats per minute. If heart rate and stroke volume is increases, cardiac output is also increases.
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