Stroke volume is directly proportional to

Question

Quizplus · Accepted Answer

Stroke volume is the volume of blood pumped by each ventricle during one contraction. It depends on both preload (the amount of blood in the ventricles at the end of diastole) and contractility (the force of ventricular contraction). Therefore, the correct choice is D, as both preload and contractility are directly proportional to stroke volume. Total peripheral resistance has an inverse relationship with stroke volume; an increase in resistance will decrease stroke volume.

Stroke Volume Is Directly Proportional to