#spinal_column__vertebral_column__vertebralcolumn__spine__backbone__back__rachis  the series of vertebrae forming the axis of the skeleton and protecting the spinal cord; "the fall broke his back"
  supertype:  skeletal_structure  any structure created by the skeleton of an organism
  part:  spinal_canal  coccyx  vertebra  intervertebral_disc
  part of:  axial_skeleton
  subtype:  notochord  a flexible rodlike structure that forms the supporting axis of the body in the lowest chordates and lowest vertebrates and in embryos of higher vertebrates
     subtype:  urochord  a notochord of a larval tunicate typically confined to the caudal region
  subtype:  chine  backbone of an animal

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