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Right coronary artery

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Right coronary artery
Blood supply of the heart, with the right coronary artery labelled.
Details
LocationHeart
Suppliesright atrium (RA), right ventricle (RV), & 25% to 35% of left ventricle.
Identifiers
Latinarteria coronaria dextra
Acronym(s)RCA
TA98A12.2.03.101
TA24131
FMA50039
Anatomical terminology

In the blood supply of the heart, the right coronary artery (RCA) is an artery originating above the right cusp of the aortic valve, at the right aortic sinus in the heart. It travels down the right coronary sulcus, 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 aortic sinus.[1]

At the origin of the RCA is the conus artery.

In addition to supplying blood to the right ventricle (RV), the RCA supplies 25% to 35% of the left ventricle (LV).[citation needed]

In 85% [citation needed] of patients (Right Dominant), the RCA gives off the posterior descending artery (PDA). In the other 15% [citation needed] 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.

The RCA also supplies the SA nodal artery in 60% of people. The other 40% of the time, the SA nodal artery is supplied by the left circumflex artery.

Additional images

  • Right coronary artery
    Right coronary artery
  • The arch of the aorta, and its branches.
    The arch of the aorta, and its branches.
  • Diagram of a myocardial infarction.
    Diagram of a myocardial infarction.
  • Aorta and coronary arteries at autopsy. The proximal portion of the RCA and its ostium can be seen at the lower left.
    Aorta and coronary arteries at autopsy. The proximal portion of the RCA and its ostium can be seen at the lower left.
  • Human heart with coronary arteries
    Human heart with coronary arteries
  • Fetal heart - right coronary artery
    Fetal heart - right coronary artery

References

  1. ^ Angelini, P. (15 July 2014). "Novel Imaging of Coronary Artery Anomalies to Assess Their Prevalence, the Causes of Clinical Symptoms, and the Risk of Sudden Cardiac Death". Circulation: Cardiovascular Imaging. 7 (4): 747–754. doi:10.1161/CIRCIMAGING.113.000278.
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