Right coronary artery

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Right coronary arteries
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Right coronary artery
left ventricle
Identifiers
Latinarteria coronaria dextra
Acronym(s)RCA
TA98A12.2.03.101
TA24131
FMA50039
Anatomical terminology]

In the

conus artery, [4] and atrioventricular nodal branch.[citation needed] It contributes the right side of the heart, and parts of the interventricular septum.[2][5]

Structure

The right coronary artery originates above the right aortic sinus above the aortic valve.[1][2] It passes along the right coronary sulcus (right atrioventricular groove) towards the crux of the heart.[1][3]

Segments

  • Proximal: starting at RCA origin, spanning half the distance to the acute margin[6][7]
  • Middle: from proximal segment to the acute margin[6][7]
  • Distal: from middle segment to origination point of the posterior interventricular artery, where the
    atrioventricular groove on the base of the heart.[6][7]

Variation

In approximately 80% of patients (right dominant), the RCA gives off the

]

The RCA also supplies the

]

Although rare, several anomalous courses of the right coronary artery have been described including origin from the left aortic sinus.[9]

Distribution

The right coronary artery supplies oxygenated blood to the

left ventricle (LV).[10]

There is significant overlap of supply of the coronary arteries.[2] The right coronary artery is dominant over the left coronary artery 50% of the time, equal to it 20% of the time, and less significant than it 30% of the time.[2]

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.
    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

External links