The Bicuspid and Mitral Valves

Question

The bicuspid and mitral valves
A) are semilunar valves.
B) "see" only unoxygenated blood.
C) "see" only oxygenated blood
D) are exit valves.

Accepted Answer

The bicuspid (also known as the mitral valve) and the tricuspid valves are atrioventricular valves, not semilunar valves, and they regulate blood flow between the atria and ventricles. The bicuspid/mitral valve is located between the left atrium and the left ventricle, and it "sees" only oxygenated blood because it comes from the lungs to the left atrium and then goes into the left ventricle through this valve.