Cerebral cortex is also termed as pallidum and it contains two hemispheres. Surface area of cerebral cortex in human beings is 2.2 sq m. Both the cerebral hemispheres are separated by a deep vertical fissure (deep furrow or groove). The separation is complete on an anterior side and posterior side also.. But in middle portion, the fissure expands only up to corpus callosum. Corpus callosum is the broad band of commissural fibers, connecting the two hemispheres. Surface of the cerebral cortex is manifested by  complicated pattern of sulci (singular = sulcus)