General Anatomy > Nervous system > Central part of nervous system; Central nervous system > Brain > Prosencephalon; Forebrain > Telencephalon > Cerebral hemisphere > White substance of telencephalon; cerebral white matter > Commissural fibres of telencephalon > Corpus callosum
The Corpus Callosum is the great transverse commissure which unites the cerebral hemispheres and roofs in the lateral ventricles. A good conception of its position and size is obtained by examining a median sagittal section of the brain, when it is seen to form an arched structure about 10 cm. long. Its anterior end is about 4 cm. from the frontal pole, and its posterior end about 6 cm. from the occipital pole of the hemisphere.