OVERVIEW OF THE IMMUNE SYSTEM
LYMPHATIC TISSUES AND ORGANS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following are the blood vessels that have valves?
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Veins
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Arteries
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Cappillaries
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None of the above
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Explanation:
Detailed explanation-1: -Veins have valves that prevent the backward flow of the blood.
Detailed explanation-2: -Unlike arteries, veins contain valves that ensure blood flows in only one direction. (Arteries don’t require valves because pressure from the heart is so strong that blood is only able to flow in one direction.) Valves also help blood travel back to the heart against the force of gravity.
Detailed explanation-3: -Veins have valves which allow blood to flow only in one direction. Arteries do not have valves.
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