During the cardiac cycle, which mechanical event immediately follows atrial repolarization?

Question

Quizplus · Accepted Answer

Immediately following atrial repolarization, the atria enter into diastole (relaxation) and ventricular filling begins. This is followed by atrial systole, then ventricular systole and finally, all four chambers enter into diastole again. Therefore, the next mechanical event after atrial repolarization is atrial diastole.

During the Cardiac Cycle, Which Mechanical Event Immediately Follows Atrial