Respiratory System

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Across
  1. 2. voice box
  2. 6. the windpipe
  3. 8. the lining encasing the lungs
  4. 9. interval between the two vocal cords
  5. 12. a passage way for food and liquid into the digestive system
  6. 15. where blood and air meet
  7. 17. smallest divisions of the bronchial tree
  8. 18. notch in the lung where bronchi and vessels enter
  9. 19. pockets in the facial bones
  10. 20. clusters of air sacs at the end of the bronchial tree
Down
  1. 1. separates the mouths from the nasal cavity
  2. 3. branching of the bronchus after entering the respective lung
  3. 4. space between the two vocal cords
  4. 5. breathing air into the lungs
  5. 7. a ridge at the lower of the the trachea, separating the openings of the two bronchi
  6. 10. leaf structure that opens and closes over the glottis during swallowing
  7. 11. main branches leading from the trachea to the lungs
  8. 13. exhaling out of the lungs
  9. 14. chief muscle of respiration
  10. 16. division of lungs