Respiratory System

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Across
  1. 4. A slimy substance produced by mucous membranes
  2. 5. Flap above the larynx
  3. 9. Breathing out
  4. 12. are small air sacs
  5. 13. Throat
Down
  1. 1. Breathing in
  2. 2. Nostril holes
  3. 3. Anatomical division or extension of an organ
  4. 6. Expelling air past our vocal folds
  5. 7. Passageway/tunnel
  6. 8. Adam's apple
  7. 10. Wind Pipes
  8. 11. Dome-shaped muscle