Depolarization of the Ventricles is Represented on an Electrocardiogram by The

Question

Depolarization of the ventricles is represented on an electrocardiogram by the
A) P wave.
B) T wave.
C) S wave.
D) QRS complex.
E) PR complex.

Accepted Answer

The QRS complex represents depolarization of the ventricles, which is the phase where the ventricles contract and pump blood out of the heart. The P wave represents atrial depolarization and the T wave represents ventricular repolarization. The S wave and PR complex are not specific waves observed on an electrocardiogram.