The valve of Vieussens, also known as the moderator band, is a unique anatomical structure found in the human heart. This slender band of connective tissue runs across the right ventricle, dividing it into two chambers. Synonymous terms for the valve of Vieussens include the chorda suprema and the septomarginal trabecula, referring to its function and position within the heart. Despite its small size, this valve plays a crucial role in regulating blood flow and ensuring proper functioning of the heart. Understanding the various synonyms used to describe the valve of Vieussens can aid in grasping its significance in cardiovascular physiology.