Preload is the force exerted on the walls of the ventricles at the end of diastole. The volume of blood returning to the heart influences preload. More blood returning to the right atrium increases preload; less blood returning decreases preload.

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Preload Is

Question 8

Multiple Choice

Preload is:

A) the force exerted on the walls of the ventricles at the end of diastole.
B) the volume of blood expelled by the ventricles of the heart per minute.
C) the resistance against which the left ventricle must eject its blood volume during contraction.
D) the pressure exerted by the circulating blood volume on the walls of the arteries, veins, and the chambers of the heart.

Correct Answer: