Which valve separates the right atrium from the right ventricle?

The valve that separates the right atrium from the right ventricle is the tricuspid valve. This valve plays a crucial role in the heart's function by ensuring that blood flows in the correct direction during the cardiac cycle. When the right atrium contracts, the tricuspid valve opens, allowing deoxygenated blood to flow into the right ventricle. When the right ventricle contracts, the tricuspid valve closes to prevent blood from flowing back into the atrium, directing it instead into the pulmonary artery toward the lungs for oxygenation.

In contrast, the aortic valve is located between the left ventricle and the aorta, playing a role in directing oxygenated blood out of the heart. The pulmonary valve, situated between the right ventricle and the pulmonary artery, controls blood flow from the heart to the lungs. The mitral valve separates the left atrium from the left ventricle, managing the flow of oxygen-rich blood from the lungs to the body. Understanding the specific roles of these valves helps in comprehending the overall functioning of the cardiac system.