ANATOMY
CHEST AND CARDIOVASCULAR
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which blood vessels have the thinnest walls and allow gases to pass through them?
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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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Explanation:
Detailed explanation-1: -Capillaries. Capillaries are tiny, extremely thin-walled vessels that act as a bridge between arteries (which carry blood away from the heart) and veins (which carry blood back to the heart).
Detailed explanation-2: -Our body is filled with tiny blood vessels called capillaries. To the cells in our organs, they deliver blood, nutrients, and oxygen. The walls of capillaries are extremely thin.
Detailed explanation-3: -The capillary wall is a one-layer tissue so thin that gas and other items (eg oxygen, water, proteins and fats) can pass through them driven by pressure differences. Waste items such as carbon dioxide and urea can move back into the blood to be carried away for removal from the body.
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