Which structure does NOT lie in the coronary sulcus?
High-Yield Explanation
The coronary sulcus is the groove which separates the atria from the ventricles. The right and left coronary aeries, circumflex aery, and coronary sinus all lie in this groove. The right marginal aery is a branch of the right coronary aery which lies on the right ventricle and supplies that chamber of the hea.