Respiratory system

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