Across
- 2. network of tubs that conduct air into the lungs
- 3. part behind the mouth that connects nose and mouth
- 4. the trachea splits into two primary
- 7. o2 enters the body and co2 leaves the body
- 10. pathway for air to enter and exit the body
- 12. two sets of heavy folds
- 15. divided into three passage ways
- 16. small opening to the larynx
- 18. also known as the windpipe
- 19. maintains a acid based balance
Down
- 1. part of the pharynx behind the nasal cavity
- 2. the bronchi narrows until it reachs a diameter of 1mm and they are called
- 5. soft cone shaped organs
- 6. connects the pharynx and the trachea
- 8. tiny air sac
- 9. the respiratory system protects the body from foreign invaders
- 11. lined with mucus membranes
- 13. tube held open by c shaped
- 14. filter out air particles
- 17. known as the throat