Which valve separates the right atrium and right ventricle?

• A. Tricuspid valve
• B. Mitral valve
• C. Aorta
• D. Pulmonary valve

Answer: (A)

The main concept is the arrangement of the heart’s valves that control one-way blood flow between chambers. The valve between the right atrium and right ventricle is the tricuspid valve. It opens to allow blood to move from the right atrium into the right ventricle when the heart fills, and it closes when the ventricle contracts to prevent blood from flowing back into the atrium. The mitral valve sits between the left atrium and left ventricle, the pulmonary valve sits between the right ventricle and the pulmonary artery, and the aorta is a major artery rather than a valve between chambers.