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Overview of the Respiratory System

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.




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Author(s): Center for Educational Outreach, Baylor College of Medicine
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Overview of the Respiratory System

Major Components of the System

Oral and Nasal Cavity

Pharynx and Larynx



Inside the Lungs


Functions of the System