Side wall of the medial view of the right atrium. in the center the atrioventricular node (1) continuous with the bundle of His (2) and giving the right bundle branch (3) on the septomarginal trabecula is observed. The blood supply of the Conduction system is given by , the lower nodal septal artery (a), a branch of the right coronary artery; irrigation from Kugel’s artery (b); irrigation of the right superior septal artery (c); branches from the first septal artery.

Image #1