What is the purpose of the semilunar valves in the heart?

What is the purpose of the semilunar valves in the heart?
  1. To allow the flow of blood only in one direction
  2. To prevent the flow of blood only in one direction
  3. To allow the flow of blood in both directions
  4. To prevent the flow of blood in both directions

Solution

The semilunar valves in the heart allows the flow of blood only in one direction, i.e., from the ventricles to the pulmonary artery or aorta. This prevents any backward flow of blood.

Asked in: NCERT

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