Respiratory System

3. Thin sacs that surround each lung lobe and separate your lungs from the chest wall.
8. the act of breathing
10. relating to the lungs
13. contagious infection that usually attacks your lungs
14. air sacs in the lungs where the exchange of oxygen and carbon dioxide takes place.
17. prevent foreign objects from slipping into the lungs
18. Tissue flap at the entrance to the trachea that closes when you swallow to keep food and liquids out of your airway.
19. tube where the vocal cords are, voice box
20. major muscle of respiration
21. cessation of breathing
23. gas breathed in by the lungs
24. substance that protects the lungs

1. Blood vessels in the alveoli walls that move oxygen and carbon dioxide.
2. Small branches of the bronchial tubes that lead to the alveoli.
4. flap that prevents food from entering the windpipe
5. protects the organs
6. respiratory disease that causes difficult in breathing
7. primary respiratory control center
8. bones that assist in respiration
9. inflammation of the lining of your bronchial tubes
11. organ that allows respiration to take place
12. Hollow organ that allows you to talk and make sounds when air moves in and out.
15. carry air out of your lungs
16. move microbes and debris up and out of the airways
22. is the passage leading from your mouth and throat to your stomach.