#ventricle  one of four connected cavities in the brain; is continuous with the central canal of the spinal cord and contains cerebrospinal fluid
  supertype:  bodily_cavity__cavity__cavum  (anatomy) a natural hollow or sinus within the body
  subtype:  fourth_ventricle  third_ventricle  lateral_ventricle
  part of:  encephalon
  part:  spinal_fluid__cerebrospinal_fluid__cerebrospinalfluid  clear liquid produced in the ventricles of the brain; fills and protects cavities in the brain and spinal cord

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