The Respiratory System
Across
- 1. the number of breaths per minute
- 4. formed by the palatine and maxillary bones
- 11. serous membrane lining the pleural cavities
- 12. no oxygen in cells
- 14. the first bronchi after the trachea
- 17. inelastic cords that help prevent foreign objects from entering the glottis
- 18. a passageway that bronchioles open into
- 19. the middle portion of the pharynx
- 22. C-shaped cartilages that protect the trachea
- 24. a segment of lung tissue bounded by connective tissue partitions and supplied by a single bronchi
- 25. gas exchange surfaces of the lungs
- 26. forms much of the anterior and lateral surfaces of the larynx
Down
- 2. movement of air into and out of the alveoli
- 3. the space enclosed within the flexible tissues of the nose
- 5. breaks the fluid bond between the pleurae
- 6. low tissue oxygen levels
- 7. folds over the glottis
- 8. nostrils
- 9. blood in the pleural cavity
- 10. voice box
- 12. common chambers connected to multiple individual alveoli
- 13. amount of air moved into or out of the lungs durng single quiet respiratory cycle
- 14. throat
- 15. provides posterior support to the larynx
- 16. extends behind the hard palate
- 20. the superior portion of the pharynx
- 21. opening that allows air to enter larynx
- 23. the airways that carry air to and from the exchange surfaces of the lungs