In capillaries, diffusion is the process by which:
A)nutrients are brought to tissues
B)waste products are brought to tissues
C)hormones exert their effects
D)gases are exchanged

Question

Quizplus · Accepted Answer

Capillaries are the smallest blood vessels and their walls are thin enough for gases to be exchanged between the blood and surrounding tissues through diffusion. This allows oxygen to be delivered to tissues and carbon dioxide to be removed.

In Capillaries, Diffusion Is the Process by Which