Central nervous system

Last revised by Craig Hacking on 12 Oct 2022

The central nervous system (CNS) is the part of the nervous system that includes the brain and spinal cord.

The main components of the CNS are the brain and spinal cord. In addition, the CNS includes the optic nerves (cranial nerve II), retinas, olfactory nerves (cranial nerve I), and olfactory epithelium.

Macroscopically, the CNS consists of grey matter and white matter.

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