The given diagram represents a normal ECG rec | vedclass

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(B) The $P$-wave represents the electrical excitation (or depolarization) of the atria,which leads to the contraction of both the atria.The $QRS$ comp

Vedclass · Accepted Answer

$P$ wave - Atrial depolarization,$QRS$ wave - Ventricular depolarization,$T$ wave - Ventricular repolarization

Vedclass · Answer

(B) The $P$-wave represents the electrical excitation (or depolarization) of the atria,which leads to the contraction of both the atria.The $QRS$ complex represents the depolarization of the ventricles,which initiates the ventricular contraction. The contraction starts shortly after $Q$ and marks the beginning of the systole.The $T$-wave represents the return of the ventricles from an excited to a normal state (repolarization). The end of the $T$-wave marks the end of systole.Therefore,the correct match is: $P$ wave - Atrial depolarization,$QRS$ wave - Ventricular depolarization,$T$ wave - Ventricular repolarization.

The given diagram represents a normal $ECG$ record of a human heart. Select the $CORRECT$ match from the options given below:

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