<prompt> Regarding corpus callosum true is:Connects two cerebral hemispheresConnects cerebellum to cortexContains only commissural fibresRelated to 3rd ventricle anteriorly  <response>: Ans: a Connects two cerebral hemispheres Ref: IB Singh, Neuroanatomy, ed, p.74,85CORPUS CALLOSUMMade up of large no of fibres that connect cerebral hemispheres.Parts:Anterior bend- genuMiddle trunkPosterior enlarged splenium.Relations:Intimately related to lateral ventricleUndersurface related to third ventricle.Fibres: Not strictly commissural, but carry association fibres also. 