VASCULAR
CAPILLARIES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Why are the walls of capillaries very thin?
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to facilitate diffusion of gasses
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to facilitate diffusion of nutrient
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to facilitate diffusion of blood
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to facilitate diffusion of wastes
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Explanation:
Detailed explanation-1: -They contain small pores, in addition to small gaps between cells, in their walls that allow for the exchange of larger molecules.
Detailed explanation-2: -Capillaries are where fluids, gasses, nutrients, and wastes are exchanged between the blood and body tissues by diffusion. Capillary walls contain small pores that allow certain substances to pass into and out of the blood vessel.
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