Library · Anatomy
Brain
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The brain is an organ made of nervous tissue. Picture it as three major connected parts: the cerebrum, which makes up most of it; the cerebellum; and the brainstem. All three belong to the same system, but each has its own organization.
The cerebrum has two hemispheres. On the outside is the cerebral cortex, a layer of gray matter; beneath it lies white matter. It is like an outer processing layer resting over internal communication routes.
In brief
The brain is an organ made of nervous tissue that serves as a central hub for the body's control and information processing. Its three main components are the cerebrum, cerebellum, and brainstem.
The cerebrum is the largest part and is divided into two hemispheres. Each hemisphere has an outer layer of gray matter called the cerebral cortex and subcortical white matter beneath it; the two differ in how their cells and connections are arranged.
Sources (1)
- National Center for Biotechnology InformationPhysiology, BrainPublished
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