Left marginal artery

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.

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

See also

• Right marginal branch of right coronary artery

Additional images

Coronary arteries (labeled in red text) and other major landmarks (in blue text). Left marginal artery is labeled at right.

External links

• Anatomy photo:20:09-0106 at the SUNY Downstate Medical Center - "Heart: The Left Coronary Artery and its Branches"
• Anatomy figure: 20:04-02 at Human Anatomy Online, SUNY Downstate Medical Center - "Posterior view of the heart."
• "Obtuse marginal artery". Medcyclopaedia. GE. Archived from the original on 2012-02-05.
• Image at texheartsurgeons.com
• Overview and diagrams at cardiologysite.com