Twenty Questions
Subject: Respiratory/Excretory System
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