Capillaries is the answer in this question
Oxygen and other gases pass through the capillaries.
capillaries
Nutrients pass through the capillaries (a type of blood vessel) in the small intestine.
No the smallest
Capillaries
The capillaries flow from an artery to a vein.
Yes, the capillaries are the smallest kind of blood vessel, that facilitate the movement of substances (like oxygen and glucose) in and out of the blood through their very thin walls.
Capillaries
Capillaries.
capillaries
capillaries.