The Respiratory System Crossword

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Across
  1. 2. this is your voicebox
  2. 5. this is a harmful waste gas that you have to get rid of
  3. 7. these are like small tree branches
  4. 8. these are surrounded by your ribcage
Down
  1. 1. these are a big part of the gas exchange
  2. 3. the windpipe
  3. 4. dome shaped muscle that rests on your lungs
  4. 6. little hairs inside your bronchial tubes that help remove unwanted matter from your lungs