honeypot link
skip to main content
MSDMERCK MANUALConsumer Version
HEALTH TOPICSHEALTHY LIVINGSYMPTOMSEMERGENCIESDRUG INFORESOURCESCOMMENTARYABOUT US
homeHEALTH TOPICSHEALTHY LIVING
Search icon
  1. Home/
  2. Quick Facts: Lung and Airway Disorders/
  3. Biology of the Lungs and Airways/
    Biology of the Lungs and Airways
    • Overview of the Lungs
      • What are the lungs?
      • How does breathing work?
        • What happens to air in the lungs?
      • What can go wrong with your lungs and breathing?
    MSD
    • About
    • Disclaimer
    • Permissions
    • Privacy
    • Cookie Preferences
    • Terms of use
    • Partnerships
    • Contact Us
    • Veterinary Manual
    • Global Medical Knowledge
    • Mobile App
    MSD

    Copyright© 2025Merck & Co., Inc., Rahway, NJ, USA and its affiliates. All rights reserved.