Myelin Sheath (In Multiple Sclerosis) Topic Guide

Myelin is a fatty material that creates a sheath that coats, insulates, and protects nerves of the brain and spinal cord. When the sheath is destroyed, communication between the nerve impulses and the body part are misdirected, slowed down, or incomplete. Symptoms of MS include:

Vision problems
Emotional problems
Dizziness
Balance problems
Pain
Sexual problems
Fatigue
Problems walking

Read the Myelin and the Central Nervous System Main Article >>

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CNS (Central Nervous System Anatomy)

The central nervous system (CNS) is the part of the nervous system that includes the brain and spinal cord. There are two types or divisions of the nervous system. The CNS and the peripheral nervous system (PNS). The PNS connects the CNS to sensory organs, other organs of the body, glands, muscles, and blood vessels. The peripheral nerves include the 12 cranial nerves, spinal nerves and roots, autonomic nerves (the nerves that regulate the heart muscle, glands), and the blood vessel walls.