Across
- 2. holds urine
- 5. system Digests food for nutrients
- 6. A big organ the holds air
- 8. at the base of the chest
- 9. system The outer layer of the body
- 10. system Circulates blood
- 12. A bunch of bronchi
- 14. Passageways that direct air
- 15. a long pipe
Down
- 1. tiny sacs
- 3. system Controls how we breath.
- 4. Holds urine
- 7. Windpipe
- 11. upper part of the heart
- 13. functional unit of the kidney