Why are capillaries and not arteries or veins found in the alveoli, nephrons, and villi.
A. vessels must be small so that very little blood enters these tissues
B. vessels must be narrow so that only very small molecules can reach these tissues
C. vessel walls must be thin to allow ease of transfer of molecules to these tissues
D. vessels must be lightweight so that they do not interfere with the movements of these tissues
my answer is D please check only answer if you know it. Thanks
"Vessel walls must be thin to allow ease of transfer of molecules to these tissues" is why capillaries and not arteries or veins are found in alveoli, nephrons, and villi.
Is dis right?
is dis right im so confused here
my answer is C
I'm sorry, but your answer is not correct. The correct answer is C: "vessel walls must be thin to allow ease of transfer of molecules to these tissues."
The reason why capillaries are found in the alveoli, nephrons, and villi is because these tissues require efficient exchange of molecules (such as oxygen and nutrients) between the blood and surrounding cells. Capillaries, being the smallest blood vessels, have thin and permeable walls that allow for easy diffusion of molecules.
In the alveoli of the lungs, capillaries allow oxygen to diffuse into the bloodstream and carbon dioxide to be removed from it. In the nephrons of the kidneys, capillaries called glomerular capillaries help in the filtration of waste products, ions, and water. And in the villi of the small intestine, capillaries absorb nutrients from the digested food.
Arteries and veins, on the other hand, are larger blood vessels that transport blood to and from various parts of the body. Their main function is to carry blood, not to facilitate the exchange of molecules with surrounding tissues. Hence, capillaries are the ideal choice in these specific tissues due to their thin walls and high surface area for efficient exchange of molecules.
yes kitten queen
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