Respiratory System Crossword
Across
- 3. protects trachea from getting food in it when breathing
- 6. name of system that helps us breathe
- 7. carry air to alveoli
- 9. carries air into and out of the lungs
- 10. absorb oxygen from air and get rid of CO2
- 12. breathing in oxygen and lungs expand
- 13. aka the throat
Down
- 1. site of gas exchange
- 2. allows air to enter and leave the body
- 4. allows air to enter and leave the body
- 5. what the trachea branches into
- 8. breathing out carbon dioxide and lungs relax
- 11. muscle under the lungs