The Right Coronary Artery (RCA) is one of the two main arteries that supply blood to the heart. It originates from the aorta and primarily supplies the right side of the heart, including the right atrium and right ventricle. The RCA also provides blood to parts of the heart's conduction system, which helps regulate the heartbeat. In most individuals, the RCA plays a crucial role in maintaining heart function. It branches into smaller arteries, such as the posterior descending artery (PDA), which further supplies blood to the lower parts of the heart. Proper functioning of the RCA is essential for overall cardiovascular health.