Origin of the right from the left main coronary artery (single coronary ostium in aorta).
D000368:Aged; D001011:Aorta / Q000002:abnormalities*; D003330:Coronary Vessel Anomalies / Q000473:pathology*; D006801:Humans; D008297:Male; D009206:Myocardium / Q000473:pathology; D012850:Sinus of Valsalva / Q000002:abnormalities