Twenty Questions Subject: Respiratory/Excretory System

Twenty Questions

1. Openings through which air enters the nose nostrils

2. The flap that closes the trachea when swallowing epiglottis

Tiny hairs that line the nasal cavity cilia

4. The throat or ________ is shared by both the digestive and respiratory system pharynx

5. Slippery substance that lines the nose & trachea mucus

6. Tubes that lead to the lungs bronchi

7. Dome shaped muscle that aides in breathing diaphragm

8. Your vocal cords stretch across your __________ or voice box. larynx

9. Another name for your windpipe trachea

10. The tiny air sacs in the lungs where gases are exchanged alveoli

11. These are the tiny blood vessels that the alveoli are wrapped in capillaries

12. The main function of the respiratory system is to bring _______ to the cells and eliminate water and ____________. Oxygen, carbon dioxide

13. Addictive substance in cigarettes nicotine

14. It is better to breathe through your __________ nose

15. Once the blood has been oxygenated in the lungs it will return to this part of the heart. Left atrium

16. The walls of the trachea are made up of rings of cartilage

17. Blood carrying oxygen is said to be. oxygenated

18. If food enters the trachea, a person can choke

19. Folds of connective tissue that produce our voice. Vocal cords

20. Smoking can cause tar and tumors on this organ lungs