Ch. 13: Respiratory System

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Across
  1. 3. Bronchial tree
  2. 7. Empty space between lungs
  3. 8. Nostrils
  4. 9. Sense of smell
  5. 15. Guardian of the airways
  6. 17. Throat
  7. 18. Slit between the vocal cords
  8. 19. Windpipe
Down
  1. 1. Surround nasal cavity
  2. 2. Folds of mucous membrane
  3. 3. Rests on diaphragm
  4. 4. Lymphatic tissue
  5. 5. Division of the trachea
  6. 6. Roof of the mouth
  7. 10. The voice box
  8. 11. Air sacs where gas exchange occurs
  9. 12. The Adam's apple
  10. 13. Lines thoracic wall
  11. 14. Base of tongue
  12. 16. Fill most of the thoracic cavity