Respiratory Crossword

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Across
  1. 2. A type of therapy to improve lung function (9 letters)
  2. 4. Muscle involved in breathing (8 letters)
  3. 5. Instrument to listen to breath sounds (9 letters)
  4. 6. The gas we inhale (6 letters)
  5. 7. A common device for oxygen delivery (5 letters)
  6. 8. The process of gas exchange (11 letters)
Down
  1. 1. Device to measure lung function (10 letters)
  2. 3. Condition with inflamed airways (6 letters)