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Which one of the following valves guards the opening between the right ventricle and the pulmonary artery?

Options

  1. ABicuspid valve
  2. BSemilunar valve
  3. CMitral valve
  4. DTricuspid valve

Correct answer

B. Semilunar valve

Step-by-step solution

The opening between the right ventricle and the pulmonary artery is guarded by the pulmonary semilunar valve, which prevents the backflow of deoxygenated blood from the pulmonary artery into the right ventricle. The bicuspid (or mitral) valve guards the opening between the left atrium and the left ventricle. The tricuspid valve guards the opening between the right atrium and the right ventricle. Answer: Semilunar valve

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