Across
- 2. it filters and warms up the air
- 3. tubes where air circulates inside the lungs
- 6. pathway for both the bolus and air
- 8. they convey air to the lungs
Down
- 1. sacs surrounded by capillaries
- 4. gas our body needs
- 5. conical organs located in the thoracic cage
- 7. fexible tube made of rings