Air is breathed in through the nasal passageways, travels through the trachea and bronchi to the lungs.
Review Date: 7/25/2007
Reviewed By: James L. Demetroulakos, M.D., F.A.C.S., Department of Otolaryngology, North Shore Medical Center, Salem, MA. Clinical Instructor in Otology and Laryngology, Harvard Medical School. Review provided by VeriMed Healthcare Network.