What does the P-wave represent in an ECG?

What does the P-wave represent in an ECG?
  1. The depolarisation of the atria
  2. The repolarisation of the atria
  3. The depolarisation of the ventricles
  4. The repolarisation of the ventricles

Solution

The P-wave represents the electrical excitation (or depolarisation) of the atria, which leads to the contraction of both the atria.

Asked in: NCERT

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