Overview of the Respiratory System
Bronchial tubes and their branches can be seen in this normal chest x-ray.
© Thomas Hecker.
The respiratory system, composed of lungs, airways, respiratory muscles and blood vessels, serves as the mechanism that brings oxygen into the body and release CO2 out of the body.
Author(s): Nancy Moreno, PhD, Deanne Erdmann, MS, and Sonia Rahmati Clayton, PhD
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