Lungs video

Let's take a journey through the air passageways of the lungs. Within the lungs, you can see a network of tubes called the bronchial tree, through which air enters and leaves your body.

Upon inhalation, the air you breathe in passes through the trachea (windpipe) and follows the network of bronchial tubes into each lung. The winding passageways branch into smaller and smaller sections, which end at tiny air sacs called alveoli. In each alveolus, the oxygen you inhale is exchanged for the carbon dioxide released from the cells in your body. The carbon dioxide is expelled in the reverse direction during exhalation.


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Review Date: 5/16/2007

Reviewed By: Alan Greene, M.D., F.A.A.P., Department of Pediatrics, Packard Children's Hospital, Stanford University School of Medicine; Chief Medical Officer, A.D.A.M., Inc.

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.

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