HISTOLOGY
BLOOD VESSELS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The only place in our blood vessels where diffusion can occur is ____
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capillary
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Vein
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Artery
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None of the above
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Explanation:
Detailed explanation-1: -The site of exchange of materials between blood and the surrounding cells is capillaries. Blood capillaries are the smallest vessels and are only one cell thick. Hence, exchange of materials can easily occur by diffusion across the membranes of blood capillaries.
Detailed explanation-2: -The capillaries are where molecules are exchanged between the blood and the body’s cells. The walls of capillaries are just one cell thick. Capillaries therefore allow molecules to diffuse across the capillary walls.
Detailed explanation-3: -(Also called capillary movement.) The movement of fluids in unsaturated porous media due to surface tension and adhesive driving forces (capillarity).
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