Across
- 2. carries oxygen everywhere to the rest of the body
- 3. body can not store this which is why we breathe
- 5. gaseous waste
- 6. brings oxygen into blood and carbon dioxide out of the body
- 7. holds air until transfers to alveoli
- 9. little trap door that makes sure food doesn't come into the lungs
Down
- 1. leads air to lungs
- 2. carries air to alveoli
- 4. this muscle helps lungs inflate and deflate
- 5. makes sure dirt and dust do not enter lungs
- 8. brings in air