The Contraction Phase of the Cardiac Cycle is Called

Question

The contraction phase of the cardiac cycle is called
A) depolarization.
B) systole.
C) diastole.
D) hyperpolarization.
E) asystole.

Accepted Answer

Systole refers to the contraction phase of the cardiac cycle, which includes both the atria and the ventricles. It is immediately followed by diastole, which is the relaxation phase. Depolarization and hyperpolarization refer to changes in the electrical activity of the heart that underlie its contractions and relaxations, while asystole refers to the absence of any heart activity, which is a medical emergency.