ECG depicts the depolarization and repolariza | vedclass

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(B) The $ECG$ (Electrocardiogram) consists of the $P$-wave,$QRS$ complex,and $T$-wave.$1$. The $P$-wave represents the electrical excitation (or depol

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Repolarization of atria

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(B) The $ECG$ (Electrocardiogram) consists of the $P$-wave,$QRS$ complex,and $T$-wave.$1$. The $P$-wave represents the electrical excitation (or depolarization) of the atria,which leads to the contraction of both the atria.$2$. The $QRS$ complex represents the depolarization of the ventricles,which initiates the ventricular contraction.$3$. The $T$-wave represents the return of the ventricles from an excited to a normal state (repolarization).$4$. The repolarization of the atria occurs during the ventricular depolarization ($QRS$ complex) and is masked by it; therefore,it is not represented as a distinct wave in the $ECG$ of a normal healthy individual.

$ECG$ 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?

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