The right marginal artery is a blood vessel that supplies oxygenated blood to the tissues of the heart. It branches off from the right coronary artery and runs along the lower edge of the heart, specifically the right ventricle. This artery plays a crucial role in ensuring that the heart muscle receives adequate blood flow for proper function. In addition to its primary function, the right marginal artery can also provide collateral circulation. This means that if other arteries become blocked or narrowed, the right marginal artery can help maintain blood flow to the heart. Understanding its role is important in the context of cardiovascular health and diseases.