Across
- 2. oxygen and other gases can enter into the bloodstream
- 6. entry point for air to enter snake's respiratory system
- 7. communicates chemical messages
- 9. direct air to either left or right lung
- 10. allows them to taste and smell the air
Down
- 1. allowing movement of air while swallowing large prey
- 3. exposes the vascular lung to air twice during each breathing cycle
- 4. tube snakes breathe into, connecting nose and mouth to lungs
- 5. eliminates risks of pulmonary edema due to gravity effects
- 8. extends out of their mouth while eating to allow respiration