Across
- 3. divides the nose into 2 hollow spaces
- 4. filter inhaled air to trap dust and pathogens
- 7. _____ cartilage is the largest layer of cartilage on the larynx
- 8. allow air to be carried to both lungs
- 9. branches off into the esophagus and trachea
- 11. membrane that encloses each lung
Down
- 1. breathing
- 2. voice box
- 5. closes during swallowing to prevent food and liquids from entering the respiratory tract
- 6. inspiration and expiration
- 10. contain a rich network of blood capillaries