Respiratory System

2. when air is flowing out of the lungs
3. the narrow superior portion of each lung
6. when air is flowing into the lungs
8. three mucosa-covered projections in the lateral walls of the nasal cavity
11. the main organs of the respiratory system
12. the major function of the respiratory system that occurs in four distinct events
14. difficult or labored breathing
17. when the pharyngeal tonsil becomes inflamed and swollen
18. a lethal genetic disease that causes oversecretion of thick mucus that clogs passages and increases infection risk
19. when inadequate oxygen delivery to body tissues occurs

1. routes air and plays a role in speech
4. normal quite breathing
5. commonly called the wind-pipe
7. commonly called the throat
9. a spoon-shaped flap of elastic cartilage
10. an increase in the rate and depth of breathing that exceeds the body's need to remove carbon dioxide
13. a nasal cavity that causes sinus inflammation
15. cessation of breathing
16. the terminal bronchiole lead into these air-sacs
17. clusters of lymphatic tissues