Respiratory System

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Across
  1. 3. voicebox
  2. 5. Muscle the moves up and down to help us breathe
  3. 6. Air sacs
  4. 8. Branches off the trachea
Down
  1. 1. What we breathe in
  2. 2. What we breathe out
  3. 4. Windpipe
  4. 7. Two organs that help you breathe
  5. 8. Branches of the bronchi