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NEETZoologyBody Fluids and Circulation

What do the semilunar valves guard?

Options

  1. AThe circulatory pathways
  2. BThe ventricles
  3. CThe atria
  4. DThe pulmonary artery (right side) and the aorta (left side)

Correct answer

D. The pulmonary artery (right side) and the aorta (left side)

Step-by-step solution

The openings of the right and the left ventricles into the pulmonary artery and the aorta respectively are provided with the semilunar valves. The valves in the heart allows the flow of blood only in one direction, i.e., from the atria to the ventricles and from the ventricles to the pulmonary artery or aorta. These valves prevent any backward flow.

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