The Respiratory System

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Across
  1. 1. one part we breathe through
  2. 5. branching pathways inside the lungs
  3. 6. the voice box
  4. 9. the 2 passage ways that go from the trachea to the lungs.
  5. 10. the muscle under the lungs
Down
  1. 2. what we inhale
  2. 3. what we exhale
  3. 4. small sacs that exchange gasses
  4. 6. the largest organ of the respiratory system
  5. 7. the windpipe
  6. 8. one part we breathe through