A basic review of the anatomy, physiology and personal protective equipment related to the respiratory system.

Did you know that there are different types of lung cancer, and smoking is not the only cause? Get the facts from WebMD.

The primary organs of the respiratory system are the lungs, which function to take in oxygen and expel carbon dioxide as we breathe. The gas exchange process is performed by the lungs and ...

Trachea The trachea, also called the windpipe, is part of the passageway that supplies air to the lungs. Any prolonged blockage, even for a few minutes, can cause death. The trachea is about 4.