MedlinePlus Medical Encyclopedia: Normal lungs and alveoli

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Normal lungs and alveoli

The lungs are located in the chest cavity and are responsible for respiration. The alveoli are small sir sacs where oxygen is exchanged in the lungs.

Update Date: 7/25/2007

Updated by: Kenneth M. Wener, MD, Department of Infectious Diseases. Lahey Clinic, Burlington, MA. Review provided by VeriMed Healthcare Network.

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