Lab 1 - Overview of the Nervous System
Major Divisions of the Brain
No two brains, nor two halves of the same brain, are quite alike in their surface pattern. Many of the major sulci and gyri, however, are generally constant in shape and position. Do not let the inconsistent use of the terms fissures and sulci disturb you. The term fissure is supposed to indicate a groove that is deeper than a sulcus, but many times the words are used interchangeably.
The brain consists of the following subdivisions: 
Prosencephalon (forebrain)
- Telencephalon (cerebral hemispheres)
- Diencephalon
Brain Stem
- Mesencephalon (midbrain)
- Rhombencephalon (hindbrain)