Blood leaves the left ventricle through which valve?

Blood leaves the left ventricle through which valve?

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

Answer: (D)

Blood leaving the left ventricle is pumped into the aorta to supply the whole body, so the valve that opens to let that outflow proceed is the aortic valve. It sits at the junction between the left ventricle and the aorta and is a semilunar valve that gates the exit from the ventricle into the systemic circulation. The other valves have different roles and locations: the tricuspid valve lies between the right atrium and right ventricle; the mitral valve sits between the left atrium and left ventricle and prevents blood from flowing back into the left atrium when the ventricle contracts; the pulmonary valve sits between the right ventricle and the pulmonary artery.

Blood leaving the left ventricle is pumped into the aorta to supply the whole body, so the valve that opens to let that outflow proceed is the aortic valve. It sits at the junction between the left ventricle and the aorta and is a semilunar valve that gates the exit from the ventricle into the systemic circulation.

The other valves have different roles and locations: the tricuspid valve lies between the right atrium and right ventricle; the mitral valve sits between the left atrium and left ventricle and prevents blood from flowing back into the left atrium when the ventricle contracts; the pulmonary valve sits between the right ventricle and the pulmonary artery.