Across
- 3. sticky liquid, another name for mucus
- 7. bones that protect the lungs
- 8. two of these at the end of the trachea
- 9. carries blood into the heart
- 10. blood vessel in the walls of the alveoli
- 11. strong muscle that draws air into the lungs
- 12. system meaning the same as lungs
- 14. structure on face that allows air to enter the trachea
- 16. carries blood away from the heart
- 17. nodes found on the walls of the bronchial tubes and trachea
Down
- 1. traps unwanted matter that gets into the nose and lungs
- 2. tiny sacs at the end of bronchioles
- 4. the pipe leading into the lungs
- 5. the right lung is divided into three of these, the left lung two
- 6. found at the end of the bronchial tubes
- 12. protective sack around the lungs
- 13. lung condition restricting bronchioles
- 15. move mucus in wave like motion