Exchange of substances between the cardiovascular system and the interstitial fluid occurs mainly in which of the following?
A)Arteries
B)Arterioles
C)Capillaries
D)Venules
E)Veins

Question

Quizplus · Accepted Answer

Capillaries are the smallest and thinnest blood vessels in the body, and they are where the exchange of substances (such as oxygen, nutrients, and waste products) between the cardiovascular system and the interstitial fluid occurs. Arteries, arterioles, venules, and veins all transport blood to and from the capillaries, but they do not participate in the actual exchange process themselves.

Exchange of Substances Between the Cardiovascular System and the Interstitial