Multiple choice

In which of the following defects, the valve orifice fails to develop?

  1. Atherosclerosis

  2. Arrhythmias

  3. Constrictive pericarditis

  4. Pulmonary atresia
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Pulmonary atresia is a congenital malformation of the pulmonary valve in which the valve orifice fails to develop. The valve is completely closed thereby obstructing the outflow of blood from the heart to the lungs.

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