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Descriptor English: Myelin Sheath
Descriptor Spanish: Vaina de Mielina
Descriptor Portuguese: Bainha de Mielina
Descriptor French: Gaine de myéline
Entry term(s): Myelin
Myelin Sheaths
Sheath, Myelin
Sheaths, Myelin
Tree number(s): A08.637.600.500
A08.637.800.500
A08.675.542.512.560
A08.800.800.690.500
A10.755.503
A11.284.149.165.600
A11.650.600.500
A11.650.800.500
A11.671.501.512.560
A11.671.514.553
RDF Unique Identifier: https://id.nlm.nih.gov/mesh/D009186
Scope note: The lipid-rich sheath surrounding AXONS in both the CENTRAL NERVOUS SYSTEMS and PERIPHERAL NERVOUS SYSTEM. The myelin sheath is an electrical insulator and allows faster and more energetically efficient conduction of impulses. The sheath is formed by the cell membranes of glial cells (SCHWANN CELLS in the peripheral and OLIGODENDROGLIA in the central nervous system). Deterioration of the sheath in DEMYELINATING DISEASES is a serious clinical problem.
Annotation: note entry term MYELIN; do not confuse with MYELIN PROTEINS; myelination: index under MYELIN SHEATH / physiol
Allowable Qualifiers: CH chemistry
CL classification
DE drug effects
EN enzymology
GE genetics
IM immunology
ME metabolism
MI microbiology
PA pathology
PH physiology
PS parasitology
RE radiation effects
TR transplantation
UL ultrastructure
VI virology
DeCS ID: 9378
Unique ID: D009186
Documents indexed in the Virtual Health Library (VHL): Click here to access the VHL documents
Date Established: 1966/01/01
Date of Entry: 1999/01/01
Revision Date: 2014/06/13
Myelin Sheath - Preferred
Concept UI M0014320
Scope note The lipid-rich sheath surrounding AXONS in both the CENTRAL NERVOUS SYSTEMS and PERIPHERAL NERVOUS SYSTEM. The myelin sheath is an electrical insulator and allows faster and more energetically efficient conduction of impulses. The sheath is formed by the cell membranes of glial cells (SCHWANN CELLS in the peripheral and OLIGODENDROGLIA in the central nervous system). Deterioration of the sheath in DEMYELINATING DISEASES is a serious clinical problem.
Preferred term Myelin Sheath
Entry term(s) Myelin Sheaths
Sheath, Myelin
Sheaths, Myelin
Myelin - Narrower
Concept UI M0014319
Preferred term Myelin



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