Respiratory system

3. Rhytamic process of moving air into and out of the lungs.
7. Activated internal intercostals pull the ribcage...
10. The bronchioles end in tiny air acs called...
12. When the diaphragm..., it flattens.
15. ...such as benzene, formaldehye, cadmium.
17. The respiratory muscles controlling the ribcage.
18. There are two sets of muscles that aid in breathing: the external and internal intercostal muscle between the ribs and the diaphragm under the...
19. The breathing ... consist of inhalation and exhalation.
20. A disease in which there is uncontrolled growth of cells due to cigarettes.
21. Trachea also knew as...
22. A chronic disoder in which the passages of the lungs periodiclaly become too narrow.
23. An addictive chemical which is commonly found in ciggarates.

1. After the air leaves the nasal cavity, it goes down the...
2. In the chest, the trachea branches into...
4. A condition due to the damage if alveoli in the lungs caused by harmful substances.
5. The letting out of air is called...
6. Each bronchus splits into smaller tubes called...
7. The main respiratory muscle.
8. The taking in of air is called...
9. What is being produced excessively when you have asthma.
11. The lungs are in a space called the...
13. The infglamation of the bronchi caused by irritants and cigarette smoke.
14. What bones protects the lungs?
15. What is the "tiny hairs" called...
16. When we breathing air enters the respiratory system through natal cavity.