NEETZoologyBody Fluids and Circulation
What is the purpose of the semilunar valves in the heart?
Options
- ATo allow the flow of blood only in one direction
- BTo prevent the flow of blood only in one direction
- CTo allow the flow of blood in both directions
- DTo prevent the flow of blood in both directions
Correct answer
A. To allow the flow of blood only in one direction
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.