Across
- 2. A flap of tissue that seals off the windpipe and prevents food from entering.
- 4. a substance that tends to reduce the surface tension of a liquid
- 8. chemical sensors in the brain and blood vessels
- 10. location of chemoreceptors monitor oxygen levels in the blood
- 13. two short branches located at the lower end of the trachea that carry air into the lungs.
- 17. Something the central chemoreceptors monitor
- 18. passageway for food to the esophagus and air to the larynx
- 19. expansion of the bronchial air passages
- 20. the main muscle main muscles of inspiration
- 21. movement of air in and out of the lungs
- 22. scroll like ridges on the lateral walls of the nasal cavity
- 23. outer layer of pleura lying closer to the ribs and chest wall
Down
- 1. the force causing expiration
- 3. inflammation of the voice box
- 5. tiny sacs of lung tissue specialized for the movement of gases between air and blood
- 6. the inner layer of pleura that surrounds each lung
- 7. voice box; passageway for air moving from pharynx to trachea; contains vocal cords
- 9. space between the folds of the pleura
- 11. an accessory muscles of maximum inspiration
- 12. a large membranous tube reinforced by rings of cartilage
- 14. space between the vocal folds
- 15. branched airways that lead from the trachea to the alveoli
- 16. masses of lymphatic tissue in the back of the oropharynx