Coronary_sulcus
Coronary sulcus
Groove on the surface of the heart that separates the atria from the ventricles
The coronary sulcus (also called coronary groove, auriculoventricular groove, atrioventricular groove, AV groove) is a groove on the surface of the heart at the base of right auricle that separates the atria from the ventricles.[1][2] The structure contains the trunks of the nutrient vessels of the heart,[2] and is deficient in front, where it is crossed by the root of the pulmonary trunk. On the posterior surface of the heart, the coronary sulcus contains the coronary sinus.[3] The right coronary artery, circumflex branch of left coronary artery, and small cardiac vein all travel along parts of the coronary sulcus.