🫀 _Coronary_Artery
🫀 Coronary Artery Anatomy Introduction The coronary arteries are vital blood vessels that supply oxygenated blood to the heart muscle (myocardium). Since the heart continuously pumps blood throughout the body, it requires a constant and rich oxygen supply to function effectively. Any obstruction in these arteries can lead to serious cardiac conditions such as angina or myocardial infarction (heart attack). Origin The coronary arteries arise from the ascending aorta , just above the aortic valve , from two openings called the coronary ostia . There are two main coronary arteries: Right Coronary Artery (RCA) Left Coronary Artery (LCA) 1. Right Coronary Artery (RCA) The RCA originates from the right aortic sinus and travels in the right atrioventricular (AV) groove between the right atrium and right ventricle. Major Branches of RCA: Conus branch – supplies the right ventricle outflow tract. Right marginal branch – supplies the right ventricular wall. Posterior descending artery...