HISTOLOGY
BLOOD VESSELS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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capillaries
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arteries
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veins
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none of the above
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Detailed explanation-1: -Veins have valves to prevent the backflow of blood because the blood in veins flow .
Detailed explanation-2: -Veins: Unlike arteries, veins don’t have to carry highly pressurized blood, but they do have to carry large volumes of deoxygenated blood back to your heart. Thin, less elastic walls help them handle high volumes and low pressure. Most veins have valves that open and close.
Detailed explanation-3: -Veins comprise valves, which prevent the backward flow of the blood. The valves are bicuspid, that is, they comprise two flap-like compositions. In the veins, the valves ensure that the flow of blood takes place only in one direction. On the other hand, arteries carry oxygenated blood away from the heart.
Detailed explanation-4: -Arteries do not have valves. Yet the blood flows in one direction only.