Which structures are the site of exchange between the blood and tissue cells?
A) Ventricles
B) Veins
C) Arteries
D) Capillaries

Name: Which structures are the site of exchange between the blood and tissue cells? A) Ventricles B) Veins C) Arteries D) Capillaries
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Capillaries are the functional unit of the cardiovascular system because this is where the exchange of gases, nutrients, and wastes occurs between the blood and tissue cells.

Which Structures Are the Site of Exchange Between the Blood