Question

Which position on an electrocardiogram is associated with the first sound of a heartbeat

A. P wave results from repolarization of the atria.
B. QRS complex results from ventricular depolarization.
C. P wave occurs after the QRS complex but before the T wave.
D. T wave represents depolarization of the atria.
E. repolarization of the atria is clearly visible.

Answer 1

The answer is C. P wave occurs after the QRS complex but before the T wave.