Refer to the figure, which shows an electrocardiogram (ECG). In the (ECG) of a normal cardiac cycle, which peak or trough corresponds to the relaxation of the ventricles?

Question

Refer to the figure, which shows an electrocardiogram (ECG).  In the (ECG) of a normal cardiac cycle, which peak or trough corresponds to the relaxation of the ventricles?

Quizplus · Accepted Answer

The relaxation of the ventricles corresponds to the T wave on an ECG. Therefore, the correct choice is E. Choices A, B, C, and D are incorrect as they correspond to other features on the ECG: A - atrial depolarization (atrial contraction), B - negative deflection before the R wave, C - ventricular depolarization (ventricular contraction), and D - repolarization of the ventricles.

Refer to the Figure, Which Shows an Electrocardiogram (ECG)