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Q.

In an ECG, the electrical excitation of the heart is observed as waves. Which of the following correctly represents a wave and the corresponding event? 

 WaveCorresponding event
1P-waveAtrial repolarisation
2QRS complexAtrial depolarisation
3T-waveVentricular repolarisation
4U-waveVentricular depolarisation

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a

1

b

2

c

3

d

4

answer is C.

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Detailed Solution

P-wave corresponds to atrial depolarisation

QRS complex – Ventricular depolarisation

U-wave – Repolarisation of Purkinje fibres

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In an ECG, the electrical excitation of the heart is observed as waves. Which of the following correctly represents a wave and the corresponding event?  WaveCorresponding event1P-waveAtrial repolarisation2QRS complexAtrial depolarisation3T-waveVentricular repolarisation4U-waveVentricular depolarisation