Give location of corpus callosum and arbor vitae of human brain.

Answer: Corpus callosum lies between the two cerebral hemispheres; arbor vitae lies inside the cerebellum.

• Corpus callosum: a broad, curved band of white nerve fibres located at the floor of the deep longitudinal (median) fissure, connecting the right and left cerebral hemispheres of the cerebrum. It allows communication between the two hemispheres.
• Arbor vitae: located in the cerebellum. It is the branched, tree-like arrangement of white matter inside the cerebellum, surrounded by the outer grey matter (cerebellar cortex); it is seen in a section of the cerebellum.