marginal coronary arteries

marginal coronary arteries

The three longest coronary artery branches—numbered from 1 (proximal) to 3 (distal)—that arise in the circumflex artery supplying the lateral wall of the left ventricle, unless there is a large branching vessel that dominates the lateral left ventricular wall; when a large dominating artery is present, it is called an obtuse marginal artery.