Which valve separates the right atrium and right ventricle?

The valve that separates the right atrium from the right ventricle is the tricuspid valve. This valve has three leaflets or cusps, which is how it got its name. It functions to prevent backflow of blood from the right ventricle into the right atrium during ventricular contraction, ensuring that blood flows in one direction through the heart. When the right atrium contracts, the tricuspid valve opens, allowing deoxygenated blood to flow into the right ventricle. Then, during the contraction of the right ventricle, the tricuspid valve closes to prevent any regurgitation back into the atrium as the ventricle pumps blood into the pulmonary artery toward the lungs for oxygenation.

The other valves mentioned in the options serve different functions in the heart. The pulmonary valve is located between the right ventricle and the pulmonary artery; it plays a key role in allowing blood to flow from the heart to the lungs. The aortic valve is located between the left ventricle and the aorta, controlling blood flow to the body. The bicuspid valve, also known as the mitral valve, separates the left atrium from the left ventricle. Each of these valves has