Slideshows Images Quizzes

home >  image collection a-z list > nerve fibers and myelin attack in ms picture

Image Collection: Medical Illustrations

Change Category

Use Pill Finder Find it Now See Interactions

Pill Identifier on RxList

  • quick, easy,
    pill identification

Find a Local Pharmacy

  • including 24 hour, pharmacies

Interaction Checker

  • Check potential drug interactions

98. Picture of Nerve Fibers and Myelin Attack in MS

Picture of Nerve Fibers and Myelin Attack in MS

In multiple sclerosis, an agent such as a virus or foreign antigen, in theory, may alter or interact with the immune system so that the immune system perceives myelin as an intruder and attacks it. Inflammation occurs and causes myelin to disappear. Consequently, the electrical impulses that travel along the nerves decelerate, that is, become slower. In addition, the nerves themselves are damaged. While some of the myelin may be repaired after the assault, some of the nerves are stripped of their myelin covering (become demyelinated). Scarring also occurs, and material is deposited into the scars and forms plaques. As more and more nerves are affected, a person experiences a progressive interference with functions that are controlled by the nervous system such as vision, speech, walking, writing, and memory.

Related Topics
  Multiple Sclerosis Slideshow Pictures: Causes, Symptoms and Treatment

Reviewed by William C. Shiel Jr., MD, FACP, FACR on May 8, 2008

Image Source: MedicineNet

Text: MedicineNet: "Multiple Sclerosis."

Guide to understanding the Image Collection Gallery categories:

    Health Solutions From Our Sponsors