The spread of the impulse through the ventricles (ventricular depolarization) is depicted on the ECG as the:
A) P wave.
B) QRS complex.
C) PR interval.
D) T wave.

Question

Quizplus · Accepted Answer

The QRS complex is the spread of a stimulus through the ventricles and is measured as less than 0.10 second. The P wave is the spread of a stimulus through the atria. The PR interval is the time from the initial stimulation of the atria to the initiation of stimulation of the ventricles. The T wave is the return of stimulated ventricular muscle to a resting state.

The Spread of the Impulse Through the Ventricles (Ventricular Depolarization)