Across
- 4. what we breath in
- 7. this blood vessel lays on the alveoli
- 9. what we exhale
- 11. alveoli are found at the ends
- 12. this is the system your lungs are a part of
- 13. tiny air sacs that transfer gases in and out of the body
Down
- 1. your chest area
- 2. you have 2
- 3. when the diaphragm pulls down you do this
- 5. protects your lungs
- 6. another name for trachea
- 8. in your throat
- 10. this muscle pulls down your lungs so they can inflate
- 11. splits into two main branches to each lung