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Myelin and nerve structure

Myelin and nerve structure

Overview

Myelin is the layer that forms around nerve cells. Its purpose is to speed the transmission of impulses along nerve cells.

Review Date 4/27/2023

Updated by: Linda J. Vorvick, MD, Clinical Professor, Department of Family Medicine, UW Medicine, School of Medicine, University of Washington, Seattle, WA. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.