In text{ECG},the text{QRS} complex represents | vedclass

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(C) The $	ext{ECG}$ (Electrocardiograph) is a graphical representation of the electrical activity of the heart during a cardiac cycle.- The $P$-wave

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Ventricular depolarisation

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(C) The $	ext{ECG}$ (Electrocardiograph) is a graphical representation of the electrical activity of the heart during a cardiac cycle.- The $P$-wave represents the electrical excitation (or depolarisation) of the atria,which leads to the contraction of both the atria.- The $	ext{QRS}$ complex represents the depolarisation of the ventricles,which initiates the ventricular contraction.- The $T$-wave represents the return of the ventricles from an excited to a normal state (repolarisation).Therefore,the $	ext{QRS}$ complex corresponds to ventricular depolarisation.

In $\text{ECG}$,the $\text{QRS}$ complex represents:

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