Atrial branches of coronary arteries

The atrial branches of right coronary artery derive from the right coronary artery and provide part of the blood supply to the right atrium and left atrium.

Atrial branches of coronary arteries
Sternocostal surface of heart.
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 MARG = left marginal AVN = atrioventricular nodal VEINS: SCV = small cardiac ACV = anterior cardiac AIV/GCV = great cardiac MCV = middle cardiac CS = coronary sinus
Details
Source	right coronary artery
Identifiers
Latin	rami atriales arteriae coronariae dextrae
TA98	A12.2.03.105
TA2	4134
FMA	71668
Anatomical terminology [edit on Wikidata]

Although named for the right coronary artery in Terminologia anatomica,^[1] a portion of the blood supply to the atria derives from the Circumflex branch of left coronary artery.

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