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Biology Body Fluids and Circulation Single Correct MCQ
Published on: August 21, 2026

ECG depicts the depolarization and repolarization processes during the cardiac cycle. In the ECG of a normal healthy individual one of the following waves is not represented.

A
Depolarization of atria
B
Repolarization of atria
C
Depolarization of ventricles
D
Repolarization of ventricles

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Verified by Experts
The correct answer is:
A

A normal ECG has P-wave that represents atrial depolarisation, QRS complex-ventricular depolarization, T-wave ventricular repolarisation. Therefore, atrial repolarisation is not represented in an electrocardiogram (ECG).

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