Across
- 2. movement of air
- 3. a tubelike passageway at the top of the throat
- 6. interacts with the respiratory system so you can breathe
- 7. the trachea branches into 2 narrower tubes
- 8. a flap of tissue at the lower end of the pharynx
- 10. the main organs of the respiratory system
Down
- 1. contracts and relaxes and moves air in and out of the lungs
- 4. a system of organs
- 5. bronchioles that end in microscopic sacs
- 9. air that passes from the pharynx into a triangle-shape