The right coronary artery originates from the right aortic sinus. To understand why, let's review the anatomy of the heart: The heart receives blood through the coronary arteries, which branch off from the aorta. The aorta has three sinuses of Valsalva: the right, left, and posterior aortic sinuses. The right coronary artery specifically arises from the right aortic sinus, supplying blood to parts of the heart, including the right atrium and ventricle. Recognizing the origin of the right coronary artery is crucial for understanding coronary circulation and related clinical conditions.