Match column I with column II regarding the standard ECG of a normal person.
$\begin{matrix} C o l u m n - I & C o l u m n - I I (a) & P - w a v e & (i) & A t r i a l d e p o l a r i z a t i o n (b) & Q R S w a v e & (i i) & V e n t r i c u l a r d e p o l a r i z a t i o n (c) & T w a v e & (i i i) & V e n t r i c u l a r r e p o l a r i s a t i o n \end{matrix}$

(a) – (i); (b) – (ii); (c) – (iii)

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(a) – (ii); (b) – (iii); (c) – (i)

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(a) – (iii); (b) – (i); (c) – (ii)

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(a) – (ii); (b) – (i); (c) – (iii)

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Solution

The correct option is A (a) – (i); (b) – (ii); (c) – (iii)
P-wave represents the contraction of the atria (atrial depolarization)
QRS-wave represents the contraction of the ventricles (ventricular depolarization)
T-wave represents the ventricles returning to their normal state from their contracted state (ventricular repolarization)

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Match column I with column II regarding the standard ECG of a normal person. Column−I Column−II(a)P−wave(i)Atrial depolarization(b)QRS wave(ii)Ventricular depolarization(c)T wave(iii)Ventricular repolarisation