QRS complex in an ECG is related to: | vedclass

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(A) The $QRS$ complex in an $ECG$ represents the depolarization of the ventricles,which initiates ventricular contraction (systole).- The $P$-wave rep

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Ventricular contraction

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(A) The $QRS$ complex in an $ECG$ represents the depolarization of the ventricles,which initiates ventricular contraction (systole).- The $P$-wave represents the electrical excitation (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 $T$-wave represents the return of the ventricles from an excited to a normal state (repolarization),marking the end of the systole.

$QRS$ complex in an $ECG$ is related to:

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