• Definition for "medullary sheath"
  • Hypernym for "medullary sheath"

medullary sheath definition

  • noun:
    • See myelin sheath.
    • See under Medullary.
    • a layer of myelin encasing (and insulating) the axons of medullated neurological fibers
  • adjective:
    • the layer of white semifluid material (myelin), involving the primitive sheath and axis cylinder of a medullated nerve fibre.
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