Explain the role of capillaries in the human body and how they facilitate the exchange of materials between blood and tissues
1
Capillaries store blood cells and release them during an injury.
2
Capillaries regulate blood flow and direct blood to different body parts.
3
Capillaries, through their thin walls, allow oxygen and nutrients to diffuse into body tissues and waste products to move back into the bloodstream.
4
Capillaries produce white blood cells and play a role in immunity.