Respiratory System

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Across
  1. 4. secretion produced by the mucous membranes
  2. 7. the Transportation of organs that help you breath
Down
  1. 1. non-flammable gas
  2. 2. the movement of oxagen
  3. 3. carries food from the nose and mouth
  4. 5. a tube connected to the throat
  5. 6. muscle organ that holds the vocel cords