With Which Term is Afterload Most Associated

Question

With which term is afterload most associated?
A) Preload
B) End-diastolic volume
C) Resistance
D) Hypoxemia

Accepted Answer

Afterload refers to the resistance that the heart must overcome to eject blood from the left ventricle into the systemic circulation. This resistance is primarily determined by the diameter of the arterioles throughout the body, and is therefore associated with the term "resistance." Preload and end-diastolic volume are measures of the amount of blood the heart receives before contraction, and hypoxemia refers to low oxygen levels in the blood.