ECG depicts the depolarization and repolarisation processes during the cardiac cycle. In the ECG of a normal healthy individual one of the following waves is not represented

Options

A. Depolarization of atria
B. Repolarization of atria
C. Depolarization of ventricles
D. Repolarization of ventricles

Answer

B

Explanation

In ECG P wave – Depolarization of atria.
QRS wave – Depolarization of ventricles.
T wave – Repolarization of ventricles.