Written by the Fiveable Content Team • Last updated September 2025
Written by the Fiveable Content Team • Last updated September 2025
Definition
The central nervous system consists of the brain and spinal cord, functioning as the primary control center for processing and integrating information throughout the body. It coordinates sensory data and directs motor function responses.
The myelin sheath is an insulating layer that surrounds nerves, including those in the brain and spinal cord, which allows electrical impulses to transmit quickly along the nerve cells