The tricuspid valve is a heart valve located between the right atrium and the right ventricle. It consists of three cusps or leaflets that open and close to regulate blood flow. When the right atrium contracts, the tricuspid valve opens, allowing blood to flow from the atrium to the ventricle. When the ventricle contracts, the tricuspid valve closes to prevent backflow of blood into the atrium. This valve plays a crucial role in maintaining the proper circulation of blood within the heart, ensuring efficient pumping of oxygenated blood to the rest of the body.