#axis_vertebra__axis  the 2nd cervical vertebra; serves as a pivot for turning the head
  supertype:  #cervical_vertebra__neck_bone  one of 7 vertebrae in the human spine located in the neck region
  part:  #odontoid_process  a toothlike process at the back of 2nd vertebra of the neck

No statement uses or specializes #axis_vertebra; click here to add one.