The right coronary artery (RCA) is one of the two main arteries that supply blood to the heart. It originates from the aorta and runs along the right side of the heart, providing oxygen-rich blood to the right atrium, right ventricle, and parts of the left ventricle. The RCA plays a crucial role in maintaining the heart's function and overall health. In addition to supplying blood, the RCA also gives rise to several branches, including the posterior descending artery and the right marginal artery. These branches further enhance blood flow to various heart regions, ensuring that the heart muscle receives the necessary nutrients and oxygen to function effectively.