Where is the AV node located?

The atrioventricular (AV) node is critically located in the floor of the right atrium, which plays a pivotal role in the heart's conduction system. Specifically, it lies at the junction where the atria meet the ventricles, positioned near the interatrial septum. The primary function of the AV node is to receive electrical impulses from the sinoatrial (SA) node, which acts as the heart's natural pacemaker, and then relay these impulses to the ventricles. This is essential for ensuring that the atria contract and push blood into the ventricles before the ventricles themselves contract. Understanding the AV node's location is important for grasping how electrical signals regulate the heartbeat and synchronize contractions throughout the heart's chambers, thus facilitating efficient blood flow.