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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.
Options:
A .  Depolarisation of atria
B .  Repolarisation of atria
C .  Depolarisation of ventricles
D .  Repolarisation of ventricles
Answer: Option B
:
B
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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