Ex. 36. Use the medical terms instead of the definitions.

1. The two main air passages into the lungs.

2. Voice box.

3. Covering the lung and lining the chest cavity, this membrane has 2 thin layers.

4. Air spaces within the skull.

5. Area of the brain that controls breathing.

6. Interior area of the nose; lined with a sticky mucous membrane and contains tiny, surface hairs called cilia.

7. These muscles help move the diaphragm up and down for breathing.

8. Bones attached to the spine and central portion of the breastbone, which support the chest wall and protect the heart, lungs, and other organs in the chest.

9. The main muscle used for breathing; separates the chest cavity from the abdominal cavity.

10. The muscular organ that pumps blood throughout the body.

11. Located at the entrance of the nose, these hairs trap large particles that are inhaled.

12. Thin sheets of muscle between each rib that expand (when air is inhaled) and contract (when air is exhaled).

13. A flap of cartilage that prevents food from entering the trachea (or windpipe).

14. Tube through which air passes from the nose to the lungs (also known as the windpipe).

15. The tube through which food passes from the mouth down into the stomach.

16. The throat.

17. Pulmonary arteries carry deoxygenated blood from the heart and lungs;

18. pulmonary veins carry oxygenated blood back to the heart.

19. The two organs that extract oxygen from inhaled air and expel carbon dioxide in exhaled air.

5.

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