The Respiratory System

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Across
  1. 2. Voicebox
  2. 3. Main airway to the lungs
  3. 4. The flap that prevents food from entering the windpipe
  4. 6. Tiny hair-like structures that filter air
  5. 8. Large breathing organs
  6. 9. Tube connecting the throat and lungs
  7. 10. Muscle that aids in breathing
Down
  1. 1. Branches of the trachea
  2. 5. The windpipe
  3. 7. Tiny air sacs where gas exchange occurs