Myelin-sheath Sentence Examples
In adults and children over the age of one-and-a-half years, the myelin sheath should be completely formed, and, as a result, all the toes will curl under (planter flexion reflex).
This was causing pressure on the nerve root causing loss of myelin sheath.
In MS, damage or scarring occurs to the myelin sheath a layer of fatty protein that protects the nerves.
A nerve can be likened to an electrical wire, in which the wire part is the axon of the nerve and the insulation surrounding it is the myelin sheath.
Multiple sclerosis-A progressive, autoimmune disease of the central nervous system characterized by damage to the myelin sheath that covers nerves.Advertisement
The peroxisomal disorders that include effects on the growth of the myelin sheath are considered to be part of a group of genetic disorders referred to as leukodystrophies.
In secondary encephalitis, symptoms usually begin five to ten days after the onset of the disease itself and are related to the breakdown of the myelin sheath that covers nerve fibers.
Many nerve cells have long, wire-like axons that are covered by an insulating layer called the myelin sheath.
In untreated PKU patients, abnormally high phenylalanine levels in the blood and brain can produce nerve cells with deformed axons and dendrites and cause imperfections in the myelin sheath referred to as hypomyelination and demylenation.
A little later the breaking down of the whole axon, both axis cylinder and myelin sheath alike, seems to occur simultaneously throughout its entire length distal to the place of severance.Advertisement
The Schwann cell has an extensive cytoplasm which allows it to wrap a myelin sheath around nerve axons.
Less commonly the problem lies in the insulating myelin sheath.