The coronary sulcus is the groove that separates the atria from the ventricles. It can also be called the coronary groove or AV groove.
The function of the coronary sulcus is to ultimately transfer blood between the cardiac muscles. The coronary sulcus is located between the ventricles and the atria. Reference: medical-dictionary.thefreedictionary.com
The coronary sinus runs in the posterior coronary sulcus. In the anterior coronary sulci the stems of the coronary artery run. The circumflex branch of the left and the extension of the right coronary artery that becomes the posterior descending artery run around the coronary sulcus from front to back
The coronary sulcus, also known as the atrioventricular groove, is a groove on the surface of the heart that marks the boundary between the atria and ventricles. It contains the main coronary arteries and helps supply blood to the heart muscle.
Circumflex Branch
I believe it is the same as the coronary sulcus, or at least the coronary sulcus is one of the two AV sulci. If i am correct than it is the groove on the outside of heart, in which, the circumflex artery lies.
the right interventricular sulcus I think it is atrioventricular sulus
simple it is an artery
Coronary sulcus
The Coronary Sinus
The fat in the anterior interventricular sulcus is known as the "anterior interventricular fat pad" or "anterior interventricular vein of Marshall." It serves as a cushioning layer and may contain blood vessels and nerves that supply the heart.
The atrioventricular sulcus or groove is where the right coronary artery lies. It is between the right atrium and the right ventricle.