What event(s)occur during the QRS complex of an ECG?
A)depolarization of the atria
B)repolarization of the ventricles
C)depolarization of the atria and repolarization of the ventricles
D)depolarization of the ventricles and repolarization of the atria

Question

Quizplus · Accepted Answer

The QRS complex represents depolarization of the ventricles, which results in ventricular contraction. The atria are already depolarized by the time the QRS complex occurs. Repolarization of the atria occurs during the QRS complex but is not visible on the ECG. Repolarization of the ventricles occurs during the T wave.

What Event(s)occur During the QRS Complex of an ECG