Across
- 4. co2
- 6. the pipe that send air to the lungs
- 8. is the organ that collects the air
- 10. any of the fine branching blood vessels that form a network between the arterioles and venules.
- 11. splits air into each lung
Down
- 1. he spreading of something more widely.
- 2. small air tubes that connect the bronchus to the alveoli
- 3. what we breath with
- 5. air sacs that exchange oxygen and carbon dioxide in the blood
- 7. it inflates and deflates the lungs
- 9. curved bones articulated in pairs to the spine the thing that helps you stay strait