Across
- 2. carry air to small sacs in your lungs
- 10. a small cavity or pit
- 11. carrys oxygen in your red blood cells
- 13. connective tissue
- 14. the voice box
- 16. higher concentration to lower
Down
- 1. use oxygen to break down food molecules
- 3. prevents food and drink going down the windpipe
- 4. viabrates to let you speak
- 5. air way that leads from the voice box to the bronchi
- 6. any of the major air passages of the lungs which diverge from the windpipe.
- 7. muscles that present within the rib cage.
- 8. breathing out
- 9. breathing in
- 12. wind pipe
- 15. two pink sacks