Respiratory System

2. connects the pharynx to the trachea
3. the main muscle below the lungs that drives breathing
5. the process of breathing air out
9. the main airways leading into the lungs
10. membrane surrounding the lungs
12. a condition causing breathing difficulties
13. a small flap of tissue that acts like a "trap door" to keep food out of your lungs when you swallow
14. tiny hair-like projections that move mucus and particles

1. state where the body's tissues aren't getting enough oxygen
4. tiny air sacs where gas exchange occurs
6. the process of breathing air in
7. a bluish tint to the skin, indication that the blood is not carrying enough oxygen
8. the wall of cartilage and bone that divides your nose into two separate nostrils
10. pathway for air and food
11. a temporary stop i nbreathing, often occuring during sleep