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Myelin

 

Myelin is an insulating layer, or sheath that forms around nerves, including those in the brain and spinal cord. It is made up of protein and fatty substances.

This myelin sheath allows electrical impulses to transmit quickly and efficiently along the nerve cells. If myelin is damaged, these impulses slow down. This can cause diseases such as multiple sclerosis.

 

References

Calabresi PA. Multiple sclerosis and demyelinating conditions of the central nervous system. In: Goldman L, Schafer AI, eds. Goldman-Cecil Medicine. 25th ed. Philadelphia, PA: Elsevier Saunders; 2015:chap 411.

Dorland's Online Medical Dictionary. Available at: www.dorlands.com//def.jsp?id=100069346. Accessed June 3, 2015.

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  • Myelin and nerve structure

    Myelin and nerve structu...

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    • Myelin and nerve structure

      Myelin and nerve structu...

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    A Closer Look

     

      Tests for Myelin

       
       

      Review Date: 6/1/2015

      Reviewed By: Daniel Kantor, MD, Kantor Neurology, Coconut Creek, FL and immediate past president of the Florida Society of Neurology (FSN). Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.

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