What is the complete set of contraction and relaxation events that constitutes one heartbeat called?
A) systole
B) stroke volume
C) cardiac cycle
D) diastole

Question

Quizplus · Accepted Answer

The complete set of contraction and relaxation events that constitutes one heartbeat is called the cardiac cycle. It includes systole (contraction phase), diastole (relaxation phase), and the filling of blood into the atria and ventricles. Stroke volume is the amount of blood pumped out of the heart with each contraction, and diastole is just one phase within the cardiac cycle.

What Is the Complete Set of Contraction and Relaxation Events