Exchange of Nutrients and Gases Between the Blood and Tissues

Question

Exchange of nutrients and gases between the blood and tissues occurs in the
A)arteries.
B)arterioles.
C)veins.
D)venules.
E)capillaries.

Accepted Answer

Capillaries are the smallest blood vessels in the body and are responsible for the exchange of nutrients and gases between the blood and tissues. Oxygen and other nutrients are transported from the blood to the tissue, while carbon dioxide and other waste products are transported from the tissue to the blood, in capillaries. Arteries, arterioles, veins, and venules do not directly participate in this exchange.