Across
- 2. carries oxygen to all parts of your body
- 5. means to breathe in
- 6. another name for a windpipe
- 8. a second thing your body needs to stay alive
- 9. a gas found in the air that you breathe
- 10. something your body needs to stay alive
Down
- 1. means to breathe out
- 3. a muscle used to move air in and out of lungs
- 4. a waste product produced by the body
- 7. two organs at the bottom of the trachea