The normal pacemaker of the heart is the AV node.

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The normal pacemaker of the heart is the sinoatrial (SA) node, not the AV node. The SA node is located in the right atrium and is responsible for initiating the electrical impulses that regulate the heart rate. The AV node is located at the junction between the atria and the ventricles and serves to delay the electrical impulse from the SA node, allowing the atria to contract before the ventricles do. While the AV node can serve as a backup pacemaker if the SA node fails, it is not the primary pacemaker of the heart.

The Normal Pacemaker of the Heart Is the AV Node