The heart is supplied mainly by the coronary arteries.
- The first branches of the aorta, supplyying the myocardium and epicardium
- The coronary arteries arise at right above the semilunar valve (aortic valve)
- There are two branches arising from the aorta; right and left coronary arteries
- The flow in the coronary arteries is phasic (discontinuous — occurs only during the diastolic phase)
Right coronary artery (RCA)
Route
- Branches from the right aortic sinus of the ascending