Lungs 101, National Geographic

The lungs replenish the body with lifegiving oxygen. Learn about the anatomy of the lungs, how the organs make respiration possible, and how they are vulnerable to illnesses. Subscribe: , NationalGeographic, Lungs, Educational About National Geographic: National Geographic is the world s premium destination for science, exploration, and adventure. Through their worldclass scientists, photographers, journalists, and filmmakers, Nat Geo gets you closer to the stories that m