Across
- 3. Connects the nse and lungs
- 6. The process of inhaling and exhaling
- 8. Organ where oxygen and carbon dioxide are exchanged
- 9. Gas needed by the body for energy
Down
- 1. What happens to gases in the alveoli
- 2. Small air sacs in the lungs
- 4. Muscle that helps you breathe
- 5. Gas expelled when you exhale
- 7. Primary entry pont for air