No the coronary sulcus does not contain fat. The coronary sulcus is a groove or depression on the surface of the heart located between the atria and ventricles and is lined with connective tissue.
These sulci contain arteries and veins that carry blood to and from cardiac muscle.
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
Circumflex Branch
the right interventricular sulcus I think it is atrioventricular sulus
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.
simple it is an artery
Coronary sulcus
The Coronary Sinus
The atrioventricular sulcus or groove is where the right coronary artery lies. It is between the right atrium and the right ventricle.
The atria of the heart are separated from the ventricles by an area called coronary groove (sulcus). This contains the trunks of the coronary arteries which bring oxygenated blood to the heart muscles. On the back surface of the heart, the coronary sulcus contains the coronary sinus which receives venous blood from the heart muscles.