Right coronary artery
|Right coronary artery|
Sternocostal (front) surface of heart. (Right coronary artery labeled at left.)
|Latin||arteria coronaria dextra|
|Supplies||right atrium (RA), right ventricle (RV), & 25% to 35% of left ventricle.|
The right coronary artery (RCA) is an artery originating above the right cusp of the aortic valve. It travels down the right atrioventricular groove, towards the crux of the heart. It branches into the posterior descending artery and the right marginal artery. Although rare, several anomalous courses of the right coronary artery have been described including origin from the left sinus of valsalva.
At the origin of the RCA is the conus artery.
In 85% of patients (Right Dominant), the RCA gives off the posterior descending artery (PDA). In the other 15% of cases (Left Dominant), the PDA is given off by the left circumflex artery. The PDA supplies the inferior wall, ventricular septum, and the posteromedial papillary muscle.
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
SCV = small cardiac
ACV = anterior cardiac
AIV/GCV = great cardiac
MCV = middle cardiac
CS = coronary sinus
- thoraxlesson4 at The Anatomy Lesson by Wesley Norman (Georgetown University) (heartantmajorvessels)
- Anatomy figure: 20:03-04 at Human Anatomy Online, SUNY Downstate Medical Center - "Anterior view of the heart."
- Figure of the marginal artery of the heart - merck.com.