respiratory system

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Across
  1. 3. The thingy that vibrates when you talk
  2. 4. The thingy you need to use to breathe into the lungs
  3. 7. is the thing you have for making air go down to the lungs
Down
  1. 1. An organ you need to use to breath
  2. 2. on it is are holes and it separates into two
  3. 5. little air sacks it takes oxygen and kicks out carbon dioxide
  4. 6. diaphragm is the thing when you breathe it pushes up and down again.