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

Question

Quizplus · Accepted Answer

The P wave represents atrial depolarization, which is the contraction of the atria.

Answer: A 
 The QRS complex represents ventricular depolarization, which is the contraction of the ventricles.

Answer: C 
 The T wave represents ventricular repolarization, which is the relaxation of the ventricles.

Answer: D 
 The U wave is not typically seen in a normal ECG and its origin is not fully understood. It may represent repolarization of the Purkinje fibers or delayed repolarization of the ventricles. It is not directly associated with any specific action in the cardiac cycle.

Match Each ECG Wave or Complex with the Corresponding Action