Question

Where in the circulatory system does the most rapid exchange of substances occur due to their thin walls and close proximity to the body's tissues?

A) Arteries
B) Veins
C) Capillaries
D) Venules

Answer 1

The most rapid exchange of substances occurs in capillaries of the circulatory system.

Step-by-step explanation:

The rapid exchange of substances due to their thin walls and close proximity to the body's tissues occurs in capillaries of the circulatory system. Capillaries are the smallest blood vessels and connect arterioles and venules, forming capillary beds where substances are exchanged between the blood and surrounding tissues.