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Which valves prevent the backward flow of blood into the ventricles from pulmonary artery and systemic aorta?
- a)Tricuspid valves
- b)Semilunar valves
- c)Bicuspid valves
- d)Thebesian valves
Correct answer is option 'B'. Can you explain this answer?
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Which valves prevent the backward flow of blood into the ventricles f...
Semilunar valves prevent backward flow of blood into ventricles from arteries.
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Which valves prevent the backward flow of blood into the ventricles f...
Semilunar valves
The semilunar valves, which include the pulmonary valve and the aortic valve, are responsible for preventing the backward flow of blood into the ventricles from the pulmonary artery and systemic aorta. These valves consist of three cusps that are shaped like half-moons, hence the name "semilunar."
Function of Semilunar Valves
- When the ventricles contract and blood is pumped out into the pulmonary artery and aorta, the semilunar valves open to allow blood flow.
- After the ventricles relax, the pressure in the pulmonary artery and aorta decreases, causing the semilunar valves to close and prevent the blood from flowing back into the ventricles.
Preventing Backflow
- The semilunar valves play a crucial role in maintaining the one-way flow of blood through the heart.
- If these valves are not functioning properly, it can lead to conditions such as pulmonary regurgitation or aortic regurgitation, where blood leaks back into the ventricles.
In conclusion, the semilunar valves are essential for ensuring efficient blood circulation in the body by preventing the backward flow of blood into the ventricles from the pulmonary artery and systemic aorta.
The semilunar valves, which include the pulmonary valve and the aortic valve, are responsible for preventing the backward flow of blood into the ventricles from the pulmonary artery and systemic aorta. These valves consist of three cusps that are shaped like half-moons, hence the name "semilunar."
Function of Semilunar Valves
- When the ventricles contract and blood is pumped out into the pulmonary artery and aorta, the semilunar valves open to allow blood flow.
- After the ventricles relax, the pressure in the pulmonary artery and aorta decreases, causing the semilunar valves to close and prevent the blood from flowing back into the ventricles.
Preventing Backflow
- The semilunar valves play a crucial role in maintaining the one-way flow of blood through the heart.
- If these valves are not functioning properly, it can lead to conditions such as pulmonary regurgitation or aortic regurgitation, where blood leaks back into the ventricles.
In conclusion, the semilunar valves are essential for ensuring efficient blood circulation in the body by preventing the backward flow of blood into the ventricles from the pulmonary artery and systemic aorta.
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Which valves prevent the backward flow of blood into the ventricles from pulmonary artery and systemic aorta?a)Tricuspid valvesb)Semilunar valvesc)Bicuspid valvesd)Thebesian valvesCorrect answer is option 'B'. Can you explain this answer?
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