ECG depicts the depolarisation and repolarisation processes during the cardiac cycle. In the ECG of a normal healthy individual one of the following waves is not represented.
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P wave – depolarization of atria
QRS wave – depolarization of ventricles
T wave – repolarization of ventricles
Repolarization of atria is not shown in the ECG.
Hence, ‘repolarization of atria’ is correct answer.
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