#cartilaginous_tube__cartilaginoustube  a tube with cartilaginous walls
  supertype:  #tube-shaped_structure__tube  (anatomy) any hollow cylindrical body structure
  subtype:  #bronchus__bronchial_tube__bronchialtube  either of the two main branches of the trachea
     subtype:  #bronchiole  any of the smallest bronchial tubes; ending in alveoli
  subtype:  #windpipe__trachea  membranous tube with cartilaginous rings that conveys inhaled air from the larynx to the bronchi

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