Respiratory System

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Across
  1. 3. Major muscle of respiration
  2. 4. Air passages to the lungs which splits from the windpipe
  3. 6. Air passage in the neck
  4. 8. Air passage connected to the nose and mouth
Down
  1. 1. Also called the windpipe
  2. 2. Bones that protect the lungs
  3. 5. Air channel in the mouth
  4. 6. Pair of air-filled organs in your chest
  5. 7. Air channel in the nose