Atrioventricular and ventriculo-atrial branches of the human coronary arteries supplying the walls of heterolateral cardiac chambers.

In 20% of 40 human hearts, AV and VA branches of the coronary arteries supplied the wall of cardiac chambers on the opposite side of the heart. VA branches were more frequent than AV branches and both were observed at the level of the crux cordis (in the diaphragmatic aspect of the heart).

Atrioventricular and ventriculoatrial branches of the coronary arteries in human hearts.

Atrioventricular (AV) and ventriculoatrial (VA) branches of the coronary arteries are vessels which supply simultaneously atrial and ventricular walls by means of recurrent rami. The terminology indicates the name of the main vessel followed by the name of the recurrent vessel both combined in an adjective. These branches establish a vascular 'suture' across the coronary sulcus in front (superficially to) or behind (deeply to) the trunks of the right coronary artery and of the left coronary artery (circumflex artery). The AV and VA branches, found in 95% of 40 human hearts, should be considered a normal characteristic of the coronary circulation and an important anatomical factor for the clinical interpretation of pathological cardiac phenomena.