Respiratory System

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Across
  1. 4. the windpipe
  2. 6. membrane surrounding the lungs
  3. 7. the voice box
  4. 8. infectious disease of the throat and upper respiratory tract, caused by bacteria
  5. 9. listening to the sounds in the chest
Down
  1. 1. central cavity between the lungs in the chest
  2. 2. the throat
  3. 3. collection of fluid
  4. 5. imperfect lung expansion, collapsed lung
  5. 10. thin hairs attached in the lining of the respiratory tract