Question

Which of the following is not true about the heart valves?

• A. The mitral valve separates the left atrium from the left ventricle
• B. The tricuspid valve divides the right atrium from the right ventricle
• C. Aortic and pulmonary valves control the flow of blood back into the heart
• D. The pulmonary valves are supported by chordae tendineae so that the regurgitation of blood into the atria during ventricular contraction does not occur

Answer 1

The correct option is D

The pulmonary valves are supported by chordae tendineae so that the regurgitation of blood into the atria during ventricular contraction does not occur

Mitral valve is the valve between the left atrium and the left ventricle of the heart, which has two tapered cusps. The function of this valve is to prevent backflow of blood into the left atrium.

The tricuspid valve is between the right atrium and the right ventricle. The function of this valve is to prevent backflow of blood into the right atrium.

The aortic valve is one of the two semilunar valves of the heart, the other being the pulmonary valve. The aortic valve opens to allow blood to leave the left ventricle (the main pumping chamber of the heart) and closes to prevent blood from leaking backwards into the ventricle from the rest of the body. The pulmonary valve is the one that allows blood to leave the heart via the left ventricle to the lungs, through the pulmonary artery. The atrioventricular valves are supported by chordae tendinae so that the regurgitation of blood into the atria during ventricular contraction does not occur.