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

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

• A. Tricuspid
• B. Pulmonary semilunar valve
• C. Bicuspid valve
• D. Chordae tendinae

Answer: (A)

The valve between the right atrium and the right ventricle is the tricuspid valve. It opens to allow blood to move from the atrium into the ventricle, and it closes during ventricular contraction to prevent backflow into the atrium. The tricuspid has three cusps and is tightened by chordae tendineae attached to papillary muscles, which keep the leaflets from prolapsing into the atrium when the ventricle contracts. For context, the pulmonary semilunar valve sits at the junction of the right ventricle and the pulmonary artery, the left-sided counterpart is the bicuspid (mitral) valve between the left atrium and left ventricle, and chordae tendineae are the supportive cords that help stabilize valve leaflets rather than being valves themselves.

The valve between the right atrium and the right ventricle is the tricuspid valve. It opens to allow blood to move from the atrium into the ventricle, and it closes during ventricular contraction to prevent backflow into the atrium. The tricuspid has three cusps and is tightened by chordae tendineae attached to papillary muscles, which keep the leaflets from prolapsing into the atrium when the ventricle contracts.

For context, the pulmonary semilunar valve sits at the junction of the right ventricle and the pulmonary artery, the left-sided counterpart is the bicuspid (mitral) valve between the left atrium and left ventricle, and chordae tendineae are the supportive cords that help stabilize valve leaflets rather than being valves themselves.