A indicates where most nutrient and waste exchange occurs between the tissue and blood i.e., the capillaries
- In the capillaries, waste, nutrients, and gases are exchanged between the blood and tissue.
- Small blood arteries called capillaries create networks surrounding body cells by branching off from arterioles.
- In the lungs, capillaries release carbon dioxide for expiration and take oxygen from the air that has been inhaled into the bloodstream.
- Because capillaries are so tiny, only one blood cell can pass through them at a time.
- These capillaries allow nutrients and oxygen to reach the cells. Wastes from the cells can be transported to the blood through capillaries and veins.
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