What Are Capillaries?
Reviewed: Dr. Gromatzky
4. Exchange
The capillaries allow for the exchange of oxygen and nutrients in and out of the tissues. For example, it is the capillaries in the lungs that absorb the inhaled oxygen so it can then be taken to elsewhere in the body.
They also help with the exchange of nutrients and fluids within the body. In addition to bringing in fresh resources from the outside world, capillaries also help to clean up the body by removing waste materials. They will absorb waste products and carbon dioxide and transport them to the appropriate organs where the can be processed, and then expelled.
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