Skip to content

    Heartburn/GERD Health Center

    Font Size
    A
    A
    A

    Gas Exchange in the Lungs

    n5551117.jpg

    Illustration copyright 2000 by Nucleus Communications, Inc. All rights reserved. http://www.nucleusinc.com

    In the lungs, oxygen and carbon dioxide (a waste product of body processes) are exchanged in the tiny air sacs (alveoli) at the end of the bronchial tubes. The alveoli are surrounded by capillaries. When a person inhales, oxygen moves from the alveoli to the surrounding capillaries and into the bloodstream. At the same time, carbon dioxide moves from the bloodstream to the capillaries and into the alveoli. The carbon dioxide is removed from the lungs when a person exhales.

    ByHealthwise Staff
    Primary Medical ReviewerE. Gregory Thompson, MD - Internal Medicine
    Specialist Medical ReviewerKen Y. Yoneda, MD - Pulmonology

    Current as ofSeptember 9, 2014

    WebMD Medical Reference from Healthwise

    Last Updated: September 09, 2014
    This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.

    Today on WebMD

    Woman eating pizza
    How it starts, and how to stop it.
    man with indigestion
    Get lifestyle and diet tips.
     
    woman shopping for heartburn relief
    Medication options.
    man with heartburn
    Symptoms of both.
     
    digestive health
    Slideshow
    Heartburn or Heart Attack
    Article
     
    heartburn
    Article
    stomach acid rising
    Article
     
    Woman eating pizza
    Slideshow
    digestive myths
    Slideshow
     
    Extreme Eats
    Slideshow
    Bowl of pasta and peppers
    Slideshow