Questions: © 2022 Chamberlain University Heart Valves Which valve prevents the backflow of blood into the right ventricle? Aortic valve Mitral valve Pulmonary valve Tricuspid valve Bicuspid valve

The answer is the third one: Pulmonary valve.

Explanation for each option:

• Aortic valve: This valve prevents the backflow of blood from the aorta into the left ventricle. It is not involved in preventing backflow into the right ventricle.

• Mitral valve: Also known as the bicuspid valve, it prevents the backflow of blood from the left ventricle into the left atrium. It is not related to the right ventricle.

• Pulmonary valve: This valve prevents the backflow of blood from the pulmonary artery into the right ventricle. Therefore, it is the correct answer to the question.

• Tricuspid valve: This valve prevents the backflow of blood from the right ventricle into the right atrium. It does not prevent backflow into the right ventricle.

• Bicuspid valve: This is another name for the mitral valve, which is involved with the left side of the heart, not the right ventricle.

In summary, the pulmonary valve is responsible for preventing the backflow of blood into the right ventricle.