EMBRYOLOGY
RESPIRATORY SYSTEM
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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 a wall that is 1 cell thick?
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Veins
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Arteries
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Capillaries
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None of the above
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Explanation:
Detailed explanation-1: -Final answer: One-cell thick vessels are called capillaries.
Detailed explanation-2: -Arteries are the largest blood vessels with the thickest walls, and capillaries are the smallest.
Detailed explanation-3: -Capillaries are the connection of the smallest branches of arteries and veins. The capillary walls are one cell thick. Capillaries allow molecules to pass through across the capillary walls. This exchange of materials is not possible across the walls of other types of blood vessels because the walls are too thick.
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