#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
  subtype:  notochord  chine
  part:  spinal_canal  coccyx  vertebra  intervertebral_disc
  part of:  axial_skeleton__axialskeleton  the part of the skeleton that includes the skull and spinal column and sternum and ribs
     part of:  endoskeleton  the internal skeleton; bony and cartilaginous structure (especially of vertebrates)

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