Under which condition, the valves in the vein prevents backflow of blood?

Low pressure

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High Pressure

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No pressure

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Very high pressure

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Solution

The correct option is A Low pressure
Veins carry blood back to the heart from the rest of the body. The blood returning to the heart has very low pressure. Valves present in veins work to prevent backflow of blood that is under low pressure.
So the correct answer is option A.

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Similar questions

Q. have valves to prevent backflow of blood moving under low pressure.

Q. Assertion: Valves are present in veins.
Reason: Valves prevent the backflow of blood in veins.

Veins have valves to prevent the backflow of blood because the blood in veins flow ________.

Q. Why doesn't the arteries need valves?
1. Is it because of high pressure . CAN HIGH PRESSURE MAKE THE CELLS MOVE IN FORWARD DIRECTION?
2. So that means that because the cells in the veins dont have much pressure they need valves..

3. But this goes against..this..
" Varicose veins occur when veins are unable to prevent backward flow of blood in places where high blood pressure occurs such as in the feet"

Plz explain while considering my guess.

Thankyou

Valves are found in veins to check the backflow of blood flowing under

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Under which condition, the valves in the vein prevents backflow of blood?

The correct option is A Low pressureVeins carry blood back to the heart from the rest of the body. The blood returning to the heart has very low pressure. Valves present in veins work to prevent backflow of blood that is under low pressure.So the correct answer is option A.

The correct option is A Low pressure
Veins carry blood back to the heart from the rest of the body. The blood returning to the heart has very low pressure. Valves present in veins work to prevent backflow of blood that is under low pressure.
So the correct answer is option A.