Prosencephalon

The prosencephalon (or forebrain), the mesencephalon (midbrain), and rhombencephalon (hindbrain) are the three primary portions of the brain of vertebrates. They develop very early during development of the central nervous system.

When the embryonic prosencephalon fails to divide the brain into two lobes, it results in a condition known as holoprosencephaly.

Other websites

 Sylvius: 400+ structure neuroanatomical visual glossary; used by over half of U.S. medical schools
 High-Resolution Cytoarchitectural Primate Brain Atlases

Category:Anatomy of the brain