Left marginal artery

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Artery: 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
Latin	ramus marginalis sinister arteriae coronariae sinistrae
Supplies	left ventricle
Source	circumflex artery
Vein	left marginal vein

The left marginal artery (or obtuse marginal artery) is a branch of the circumflex artery, originating at the posterior interventricular sulcus, traveling along the left margin of heart towards the apex of the heart.

Additional images

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

Brachiocephalic	Thyreoidea ima Right subclavian Right common carotid

Left common carotid	External carotid Internal carotid Carotid body Carotid sinus Carotid bifurcation

Left subclavian	Internal thoracic: Anterior intercostal Thymic Pericardiacophrenic Perforating branches terminal (Musculophrenic, superior epigastric) Kacheshmarova's artery (Arteria xiphia (Arteria africana)) Costocervical trunk: Highest intercostal (Posterior intercostal 1–2) Deep cervical

Other	Aortic body

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