Conducting System
The AV node is a multiregional structure that includes the compact portion and His bundle.
The compact portion of the AV node is located anterior to the coronary sinus ostium and just superior to the septal insert of the tricuspid valve.
located within the atrioventricular septum, near the opening of the coronary sinus.
The vascular supply of the AV node is from a branch of the right coronary artery in 85% to 90% of people, and from the left circumflex artery in 5% to 10% of people.