Across
- 3. divides into alveoli
- 5. Muscles found between ribs
- 8. Seperates the thorax from the abdomen
- 9. These rings keep the wind pipe open
Down
- 1. Divides into two
- 2. Gaseous exchange occurs here
- 4. Found between the pleural membrane
- 6. The voice box
- 7. What is the name given to the voice box