Across
- 6. the exchange of gases in the lungs
- 7. also known as the windpipe
- 8. a wall separating the two cavities in the stomach
- 10. an allergic disorder of respiration
Down
- 1. exchange of gases with the cells in the body
- 2. the action of breathing
- 3. made up of organs in the body that help you breath
- 4. the two main branches of the trachea
- 5. a measure of harmful particles in the air
- 9. an air cell of the lungs