Exchange of gases and metabolites between the blood and tissues occurs in the

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Capillaries are the smallest blood vessels in the body and are responsible for the exchange of gases and metabolites between the blood and tissues due to their thin walls and close proximity to cells. Arteries, arterioles, venules, and veins are not involved in this process as they primarily function to transport blood from one part of the body to another.

Exchange of Gases and Metabolites Between the Blood and Tissues