• Gr.7-Bio-Respiratory System
     Help
  • What is the main function of the lungs?
    To exchange oxygen and carbon dioxide
  • What happens to the diaphragm when you inhale?
    It contracts and moves downward.
  • What happens to the diaphragm when you exhale?
    It relaxes and moves upward.
  • Unlock this slideshow and over 4 million more with Baamboozle+
    Try slideshows
    • Your experience on this site will be improved by allowing cookies.