Mielina

Definición

Es una capa aislante que se forma alrededor de los nervios, entre ellos, los que se encuentran en el cerebro y la médula espinal. Está compuesta de proteína y sustancias grasas.

El propósito de la vaina de mielina es permitir la transmisión rápida y eficiente de impulsos a lo largo de las neuronas. Si la mielina se daña, los impulsos se retrasan, lo cual puede causar enfermedades como la esclerosis múltiple.

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Revision

Last reviewed 5/22/2011 by David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

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