Across
- 2. Closes off the trachea when swallowing to prevent choking
- 3. Filters and warms the air
- 4. Traps dust and microbes
- 7. Produces sound and prevents food from entering the airways
- 8. Carries air from the trachea into the lungs
- 9. Houses the structures where gas exchange occurs
- 10. Connects the nasal cavity to the larynx and helps direct air
- 11. Site of oxygen and carbon dioxide exchange with the blood
Down
- 1. Contracts and flattens to allow the lungs to expand during breathing
- 3. Allows air to enter and exit the nasal cavity
- 5. Sweeps mucus and trapped particles out of the airways
- 6. Essential gas that the body needs for cellular respiration
- 8. Distributes air to the alveoli within the lungs