Question

multiple choice question
the function of capillaries is ________.
o to pick up excess interstitial fluid
o the exchange of substances between blood and surrounding tissues
o to carry blood to arteries and thereby return the blood to the heart

Explanation:

Capillaries are tiny blood - vessels where the exchange of oxygen, nutrients, and waste products between the blood and surrounding tissues occurs. Lymphatic vessels pick up excess interstitial fluid, and veins carry blood back to the heart, not capillaries carrying blood to arteries to return it to the heart.

Answer:

the exchange of substances between blood and surrounding tissues