| Left marginal artery | |
|---|---|
 Base and diaphragmatic surface of heart. (Left marginal artery not visible, but would be near center left.) | |
 ARTERIES: RCA = right coronary AB = atrial branches SANB = sinuatrial nodal RMA = right marginal LCA = left coronary CB = circumflex branch LAD/AIB = anterior interventricular LMA = left marginal PIA/PDA = posterior descending AVN = atrioventricular nodal VEINS: SCV = small cardiac ACV = anterior cardiac AIV/GCV = great cardiac MCV = middle cardiac CS = coronary sinus | |
| Details | |
| Source | Circumflex artery |
| Vein | Left marginal vein |
| Supplies | Left ventricle |
| Identifiers | |
| Latin | ramus marginalis sinister arteriae coronariae sinistrae |
| TA98 | A12.2.03.209 |
| TA2 | 4152 |
| FMA | 3902 |
| Anatomical terminology | |
The left marginal artery (or obtuse marginal artery) is a branch of the circumflex artery, originating at the left atrioventricular sulcus, traveling along the left margin of heart towards the apex of the heart.