Across
- 1. the flap of tissue that blocks the airway while swallowing
- 4. the passageway from your mouth and nose which leads leads to the digestive and respiratory systems
- 5. breathing out
- 7. contains the vocal cords
- 8. small sacs at the ends of each bronchiole
- 9. smaller tubes branching off of the bronchi
- 12. two main branches from the trachea
Down
- 2. a single long tube surrounded by rings of cartilage
- 3. breathing in
- 6. a wall of muscle that expands the chest cavity each time it contracts
- 10. the gas we absorb from the air when breathing
- 11. pair of organs that allow us to breathe