Across
- 3. The tube that carries air to the lungs
- 4. To breathe in
- 5. What we breathe in to survive
- 7. Gas your body needs to live
- 8. Main organs used for breathing
- 9. Muscle under the lungs that helps breathing
Down
- 1. To breathe out
- 2. Tubes that branch from the trachea
- 5. Tiny air sacs where oxygen enters the blood
- 6. Openings used to take in air