Across
- 2. Collective name of cardiovascular and respiratory system
- 5. Air filled cavities
- 7. The voicebox
- 8. bones extending down through the nasal cavity that increase surface area for filtering air
- 9. The primary site for gas exchange
- 10. The gatekeeper, stops food from entering the larynx
- 12. External part of the respiratory system
- 13. Alternative name for the respiratory system
- 14. Clusters of lymphatic tissue that catch bacteria
Down
- 1. Lead to the left and right lungs
- 3. Another name for nares
- 4. the central area of the thoracic cavity
- 6. The windpipe
- 11. Separates the mouth from the nasal cavity
- 13. Muscular passage for food and air into the trachea and esophagus