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10 Cards in this Set
- Front
- Back
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Axon |
A nerve fiber. |
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Demyelination |
A condition in which cells of the immune system, such as lymphocytes and macrophages, cross the blood-brain barrier and attack and destroy the myelin sheath. |
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Exacerbation |
A reappearance of symptoms of a chronic illness. Also called a flare. |
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Lesion |
An observable change in skin structure that may indicate disorders in other systems and organs. |
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Multiple sclerosis (MS) |
A chronic demyelinating neurological disease of the central nervous system associated with an abnormal immune response to an environmental factor.
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Myelin |
The fatty, segmented wrappings that normally protect and insulate nerves. Also called myelin sheath.
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Oligodendrocytes |
Cells that produce myelin.
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Plaques |
1.An invisible soft film that adheres to the enamel surface of teeth. Consists of bacteria, saliva molecules, and remnants of epithelial cells and leukocytes. 2. Scar tissue on myelin sheath due to repeated attacks by the immune system. |
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Pseudoexacerbation |
A temporary aggravation of symptoms that is directly related to a trigger and subsides as soon as the trigger is removed. |
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Remyelination |
Repair of the damaged myelin sheath by oligodendrocytes. |
