The Amount of Blood in the Ventricle at the End

Question

The amount of blood in the ventricle at the end of its resting phase is the
A) end-diastolic volume (EDV).
B) amount of blood in the ventricle at the end of its resting phase.
C) preload.
D) All of the above are true.

Accepted Answer

All the options describe the same physiological term from different perspectives. End-diastolic volume (EDV) is the volume of blood in the ventricle at the end of diastole (the heart's relaxation phase), which is also referred to as preload, indicating the initial stretching of the cardiac myocytes prior to contraction.