Across
- 2. it protects the organs inside of it
- 6. it produces energy to the blood
- 8. it carry’s air into our lungs
- 10. it does the blood exchanging
- 11. something that consumes the oxygen
- 12. it helps moving substances in and out
Down
- 1. it traps heat in our body
- 3. it is the thing that has control of the lungs
- 4. the thing that you use to inhale and exhale
- 5. it takes waste out of our tissues
- 7. where the air comes in and out
- 9. the airway connected to the lungs