Match each ECG wave or complex with the corresponding action in the cardiac cycle.
-ventricular depolarization
A)QRS complex
B)P wave
C)T wave
D)U wave

Question

Quizplus · Accepted Answer

The QRS complex represents ventricular depolarization, which is the electrical activation of the ventricles that precedes their contraction during systole in the cardiac cycle.

Answer: B
 The P wave represents atrial depolarization, which is the electrical activation of the atria that precedes their contraction during atrial systole in the cardiac cycle.

Answer: C
 The T wave represents ventricular repolarization, which is the electrical recovery of the ventricles after their contraction during systole in the cardiac cycle.

Answer: D
 The U wave is a small wave sometimes seen after the T wave and its clinical significance is unclear. It is not directly associated with any specific action in the cardiac cycle.

Match Each ECG Wave or Complex with the Corresponding Action