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Darya [45]
3 years ago
7

In a normal electrocardiogram, the ____.

Biology
1 answer:
lilavasa [31]3 years ago
7 0
The answer is B.

P wave is depolarization of atria.
QRS is depolarization of ventricles.
T wave is repolarization of the ventricles.
The repolarization of atria is not visible in the normal ECG.
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