Which blood vessel is composed of one cell layer and functions to exchange nutrients and waste materials between blood and tissues?

Which blood vessel is composed of one cell layer and functions to exchange nutrients and waste materials between blood and tissues?

Which blood vessel is composed of one cell layer and functions to exchange nutrients and waste materials between blood and tissues?




A) Capillary
B) Arteriole
C) Venule
D) Vein




Answer: A


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