The pressure in the ventricle at the end of diastole is called:
A) afterload.
B) Starling's law.
C) stroke volume.
D) preload.

Question

Quizplus · Accepted Answer

The pressure in the ventricle at the end of diastole is called preload. Preload refers to the degree of stretch of the cardiac muscle fibers at the end of diastole just before contraction, which affects the force of contraction and stroke volume. Afterload refers to the resistance the heart has to overcome to eject blood from the ventricle, while Starling's law refers to the relationship between preload and stroke volume.

The Pressure in the Ventricle at the End of Diastole