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Question

ECG depicts the depolarisation and repolarisation processes during the cardiac cycle. In the ECG of a normal healthy individual one of the following waves is not represented.


A

Depolarisation of atria

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B

Repolarisation of atria

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C

Depolarisation of ventricles

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D

Repolarisation of ventricles

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Solution

The correct option is B

Repolarisation of atria


Electrocardiography (ECG or EKG*) is the process of recording the electrical activity of the heart over a period of time using electrodes placed on the skin. One cannot observe the repolarisation of atria via an ECG.

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