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Meaning of MYELIN SHEATH

 
WordNet Dictionary
 
 Definition: 
[n]  a layer of myelin encasing (and insulating) the axons of medullated nerve fibers
 
 Synonyms: medullary sheath
 
 See Also: axolemma, case, medulla, medullated nerve fiber, myelin, myelinated nerve fiber, myeline, nodes of Ranvier, oligodendria, oligodendroglia, Ranvier's nodes, sheath

 

 

Biology Dictionary
 
 Definition: A sheath of white, fatty protein (myelin) that covers and acts as an electrical insulator for nerve fibers.
 

 

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