Which valve is located between the right atrium and the right ventricle?

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

Answer: (C)

The valve between the right atrium and the right ventricle is the tricuspid valve, the right atrioventricular valve. It has three leaflets and opens to allow blood to flow from the atrium into the ventricle during diastole. As the right ventricle contracts, the leaflets close to prevent blood from flowing back into the atrium. The other valves are located elsewhere: the mitral valve sits between the left atrium and left ventricle; the aortic valve lies between the left ventricle and the aorta; the pulmonary valve lies between the right ventricle and the pulmonary artery.