Air is breathed in through the nasal passageways, travels through the trachea and bronchi to the lungs.
Respiratory system

Review Date:

1/24/2013

Reviewed By:

Denis Hadjiliadis, MD, Assistant Professor of Medicine, Division of Pulmonary, Allergy and Critical Care, University of Pennsylvania, Philadelphia, PA. Also reviewed by A.D.A.M. Health Solutions, Ebix, Inc., Editorial Team: David Zieve, MD, MHA, David R. Eltz, Stephanie Slon, and Nissi Wang.