[citation needed] It contributes the right side of the heart, and parts of the interventricular septum.

[8] The PDA supplies the inferior wall, ventricular septum, and the posteromedial papillary muscle.

[citation needed] The RCA also supplies the SA nodal artery in 60% of people.

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

[9] The right coronary artery supplies oxygenated blood to the right atrium, the right ventricle, and the posterior third and inferior end of the interventricular septum.