Respiratory Anatomy Crossword

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Across
  1. 1. network of branching pathways in the respiratory system
  2. 3. zone outside of the respiratory zone
  3. 5. windpipe, has C-shaped cartilage to help keep it open
  4. 6. terminal bronchioles lead into this zone
Down
  1. 2. projections from lateral walls of nose that increase surface area
  2. 4. respiratory tract that includes the nose
  3. 5. vocal cords that vibrate with expelled air and allow us to speak