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URL of this page: //medlineplus.gov/ency/imagepages/9248.htm
Respiratory system
Overview
Air is breathed in through the nasal passageways, travels through the trachea and bronchi to the lungs.
Review Date 1/27/2026
Updated by: Thomas S. Metkus MD, PhD, Associate Professor of Medicine and Surgery, Johns Hopkins University School of Medicine, Baltimore, MD. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.
