respiratory system crossword
Across
- 6. the blood in the nose adds this to the air
- 10. artery leading to lungs
- 12. divides nasal cavity; increases the surface area of the nose
- 13. chamber at the back of the throat
- 14. chemical in blood that carries oxygen
- 16. mucus adds this to the air
- 18. connects to ears and nose at the pharynx
- 19. gas that effects your rate of breathing
- 20. 2/3. you normally use this much of your lungs
- 22. keeps food out of lungs
- 24. air sacs of the lung
Down
- 1. in order to speak you must do this
- 2. food used in respiration
- 3. the muscle involved in breathing
- 4. moves mucus back up the mouth
- 5. before you inhale, the diaphragm must move in this direction
- 6. maintaining constant internal environment
- 7. what you breath
- 8. what you should breathe through
- 9. windpipe
- 10. refers to the lung
- 11. when the traches branches it becomes these
- 15. part of the brain that controls breathing
- 17. produces mucus
- 21. bones involved in breathing
- 23. voice box