Across
- 2. a temporary pause in breathing
- 5. the most important organ in the respiratory system
- 7. inflammation of the Alveoli
- 8. dome-shaped muscle essential for breathing
Down
- 1. Body tissue doesn't get enough oxygen
- 3. double-layered membrane surrounding the lungs
- 4. a flap that covers throat when swallowing
- 6. tiny, hair-like organelles projecting from the surface of many eukaryotic cells