Across
- 3. Large flat muscle at the bottom of the chest
- 4. Lower chamber
- 6. the passage that direct air into Lungs
- 8. a tiny branch of air tubes
- 10. A muscular tube
- 14. Allows air to pass
- 15. Tiny sacs of lung tissue
Down
- 1. an organ that exchanges oxygen
- 2. airways in the Lungs
- 5. where digestion begins
- 7. Upper chamber
- 9. Connects arteries and veins
- 11. Forming scabs
- 12. Large muscular sac that continues
- 13. Direct air into lungs