Which valve lies between the left ventricle and the aorta?

Which valve lies between the left ventricle and the aorta?

• A. Aortic semilunar valve
• B. Pulmonary semilunar valve
• C. Bicuspid valve
• D. Tricuspid valve

Answer: (A)

The valve between the left ventricle and the aorta is the aortic semilunar valve. Its role is to let blood flow from the ventricle into the aorta during contraction (systole) and to prevent blood from flowing back into the ventricle when the ventricle relaxes (diastole). This valve is one of the semilunar valves that sit at the exits of the ventricles, with the others being the pulmonary semilunar valve between the right ventricle and the pulmonary artery. The mitral (bicuspid) valve lies between the left atrium and left ventricle, and the tricuspid valve lies between the right atrium and right ventricle.

The valve between the left ventricle and the aorta is the aortic semilunar valve. Its role is to let blood flow from the ventricle into the aorta during contraction (systole) and to prevent blood from flowing back into the ventricle when the ventricle relaxes (diastole). This valve is one of the semilunar valves that sit at the exits of the ventricles, with the others being the pulmonary semilunar valve between the right ventricle and the pulmonary artery. The mitral (bicuspid) valve lies between the left atrium and left ventricle, and the tricuspid valve lies between the right atrium and right ventricle.