The ventricles of the heart are separated by two grooves, one of which, the anterior longitudinal sulcus (or<unk> , is situated on the sternocostal surface of the heart, close to its left margin. The other groove separating the ventricles is the posterior interventricular sulcus.
Anterior interventricular sulcus
Posterior interventricular sulcus
Coronary sulcus
Interventricular septum
Bundle of Kent
Atrioventricular nodal branch
Interatrial septum
Anterior commissure