Respiratory System

6. tiny holes on the abdomen of insects through which they breathe
7. vibrations of these result in sound or speech
8. scientific name for the windpipe
10. gas that is exhaled by mammals as part of respiration
13. the back of the throat; connects the mouth with the windpipe
15. the tube that carries food from the mouth to the stomach
17. a flap if tissue that covers the windpipe to keep food and water from entering it
18. main branches of the respiratory tract leading into the lungs
19. a sticky substance that lines the respiratory tract

1. plant structure through which a plant "breathes"
2. the main organ of the respiratory system
3. that part of the throat that contains the voice box
4. the life process by which energy is released by cells
5. the breathing apparatus for fish and tadpoles
7. of theses result in sound or speech
9. the act of taking air into the lungs and expelling waste gases from the lungs
11. the most abundant gas in the air we breathe
12. the muscle that contracts and relaxes thereby causing one to inhale and exhale
14. tiny air sacs in the lungs where oxygen and carbonxdioxide are exchanged
16. given off as a waste product by green plants; essential for our survival
20. microscopic hair-like structures in the respiratory tract