At what phase of the heart cycle does repolarization of the atrial chambers occur?
A)soon after the P-peak
B)at the start of the Q-peak
C)immediately following the R-peak
D)between the S- and T-peaks

Question

Quizplus · Accepted Answer

Repolarization of the atrial chambers occurs soon after the P-wave, which represents atrial depolarization. However, atrial repolarization is typically not visible on an ECG because it occurs during the QRS complex, which represents ventricular depolarization.

At What Phase of the Heart Cycle Does Repolarization of the Atrial