P wave – MCQ – Answer
P wave is due to – Correct answer: c) Atrial depolarization
Atrial repolarization wave is usually not visible on the ECG. If seen, it is called Ta wave. It manifests as mild sagging of the PR segment and initial portion of the ST segment and becomes prominent during exercise.
QRS complex represents ventricular depolarization and T wave represents ventricular repolarization.
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