Respiratory system
Across
- 3. Main branches of the trachea
- 4. Cavities divided into two seperate cavities
- 7. Voice box
Down
- 1. connecting of nostrils and mouth
- 2. Paired and found in thorax
- 5. Principle site of gaseous diffusion
- 6. Passageway to lungs
- 8. also called nares