The initiation of the impulse in the SA node and its movement through the atria produces a:

Name: The initiation of the impulse in the SA node and its movement through the atria produces a:
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The P wave on an electrocardiogram (ECG) represents the electrical activity associated with the depolarization of the atria, which is initiated by the sinoatrial (SA) node. This leads to the contraction of the atria and precedes the ventricular contraction.

The Initiation of the Impulse in the SA Node and Its