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Q100
(NDA-I/2026)
Science & Technology › Basic Science (Physics, Chemistry, Biology)
Which one of the following valves guards the opening between the right ventricle and the pulmonary artery?
Result
Your answer:
—
·
Correct:
B
Explanation
The heart has four valves that regulate blood flow. The opening between the right ventricle and the pulmonary artery is guarded by the pulmonary valve, which is a type of semilunar valve. These valves are called "semilunar" because of the half-moon shape of their cusps. The pulmonary valve prevents the backflow of blood into the right ventricle during diastole.
- Tricuspid valve: Guards the opening between the right atrium and the right ventricle.
- Bicuspid (Mitral) valve: Guards the opening between the left atrium and the left ventricle.
- Aortic valve: Another semilunar valve located between the left ventricle and the aorta.
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