Across
- 4. a different name for number 2
- 5. how the air travels from the mouth to the lungs
- 7. first part of the respiratory system
- 8. works with the respiratory system to transport oxygen, digested food and water to all parts of the body.
Down
- 1. blocks bacteria and dust particles fron entering the lungs
- 2. found in the lungs
- 3. is where the exchange of gases take place
- 6. is similar to the windpipe but it is for a different purpose