The proportion of the left ventricular volume that is pumped out of the heart during systole is the:
A) ejection fraction.
B) stroke volume.
C) preload.
D) afterload.

Question

Quizplus · Accepted Answer

The ejection fraction represents the percentage of blood volume that is pumped out of the left ventricle with each contraction during systole. It is calculated by dividing the stroke volume (the amount of blood ejected from the heart during systole) by the end-diastolic volume (the amount of blood in the ventricle just before it contracts).

The Proportion of the Left Ventricular Volume That Is Pumped