Kezia-Victoria 8B

3. Each bronchus splits into smaller tubes called...
4. In the chest the trachea branches into two.....
8. The trachea is lined with ..... which removes dust,dirt and bacteria from the air.
12. Thoracic cavity is seperated from the abdominal cavity by a muscular sheet known as the..
13. The taking in of air.
14. Causes addiction to smokers.
15. during inhalation, the diaphragm...
18. There are ... sets of muscles that aid in breathing.
21. The growth of abnormal cells in the lungs which are cancerous.
24. When the air leaves the nasal cavity, it goes down the....
25. Causes impaired lung function and increased respiratory stress.
26. Condition due to the damage of alveoli in the lungs caused by harmful substances such as irritants in cigarette smoke.

1. During exhalation, when the air flows out, the rib cage...
2. The letting out of air.
5. There are external and ... intercostal muscles between the ribs and diaphgram under the lungs.
6. The external respiration process where air moves into and out of the lungs.
7. The natural cleansing of the lungs is disrupted, leading to the accumulation of...
9. During exhalation, diaphragm muscles relaxes and arches....
10. Inflammation of the bronchi that may be caused by tar and irritants in cigratte smoke.
11. Chronic disorder in which the air passages of the lungs periodically become too narrow due to mucus being produced excessively.
16. Disease in which there is uncontrolled growth of cells in the lungs mainly due to cigarette smoke.
17. The lungs are in a space called the...
19. When we breath in, air enters the respiratory system through the..
20. The ... air pressure outside forces air to enter the lungs.
22. The lungs are protected inside the...
23. The trachea is also known as...