
1) Medulla 2) Medullary sheath 3) Myeline 4) Neural insulator
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https://www.crosswordclues.com/clue/myelin

1) Medulla 2) Myeline
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https://www.crosswordclues.com/clue/myelin

Myelin is a dielectric (electrically insulating) material that forms a layer, the myelin sheath, usually around only the axon of a neuron. It is essential for the proper functioning of the nervous system. It is an outgrowth of a type of glial cell. The production of the myelin sheath is called myelination. In humans, myelination begins in the 14th...
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http://en.wikipedia.org/wiki/Myelin

• (n.) One of a group of phosphorized principles occurring in nerve tissue, both in the brain and nerve fibers. • (n.) A soft white substance constituting the medullary sheats of nerve fibers, and composed mainly of cholesterin, lecithin, cerebrin, albumin, and some fat.
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http://thinkexist.com/dictionary/meaning/myelin/

The fat-like substance that surrounds the axon of nerve fibers and forms an insulating material.
Found on
http://www.aans.org/Media/Glossary-of-Terminology

Compact fatty material that surrounds and insulates axons of some neurons.
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http://www.bbc.co.uk/radio4/reith2003/glossary.shtml

The fatty substance that covers and protects nerves.
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http://www.cancer.gov/dictionary?expand=M

the fatty covering of myelinated nerves which appears white to the naked eye. The parts of the brain and spinal cord, in which myelinated nerves run, has therefore been called the 'white' matter as distinct from the 'grey' matter composed of nerve cells. Myelin also contains about 20 % of proteins whose prime role is to mediate adhesion between adj...
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http://www.encyclo.co.uk/local/20169

A fat-like substance wrapped around nerve fibres, acting as an insulator and assisting the rapid transmission of nerve impulses.
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http://www.encyclo.co.uk/local/20898

<anatomy, neurology, pathology> The material making up the myelin sheath of nerve axons. ... (18 Nov 1997) ...
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http://www.encyclo.co.uk/local/20973

(mi´ә-lin) the lipid substance forming a sheath (the myelin sheath) around the axons of certain nerve fibers; it is an electrical insulator that serves to speed the conduction of nerve impulses in these nerve fibers, which are called myelinated or medullated fibers. adj., myelin´ic., adj.
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http://www.encyclo.co.uk/local/21001

a white fatty substance that forms a sheath around the axons of neurons (nerve cells) and provides the insulation necessary for the proper transmission of electrical impulses.
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http://www.encyclo.co.uk/local/22225
My'e·lin noun [ Greek marrow.]
(Physiol. Chem.) (a) A soft white substance constituting the medullary sheaths of nerve fibers, and composed mainly of cholesterin, lecithin, cerebrin, albumin, and some fat.
(b) One of a group of phosphorized principles occurring in nerve tissue, bo...
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http://www.encyclo.co.uk/webster/M/123

Myelin: The fatty substance that covers and protects nerves. Myelin is a layered tissue that sheathes the axons (nerve fibers). This sheath around the axon acts like a conduit in an electrical system, ensuring that messages sent by axons are not lost en route. It allows efficient conduction of action potentials down the axon. Myelin consists of 70%...
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http://www.medterms.com/script/main/art.asp?articlekey=4477

(mi;ue-lin) A lipoprotein material that forms a sheathlike covering around nerve fibers.
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http://www.mhhe.com/biosci/abio/glossary.mhtml

Myelin is a collection of lipid fats and proteins that insulates the axons of some neurons. This insulation being known as a myelin sheath.
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http://www.probertencyclopaedia.com/browse/EM.HTM

Fatty substance forming the outer tunic (myelin sheath) around many nerve axons; facilitates the conduction of nerve impulses along the axons.
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http://www.thehorse.com/Glossary.xhtml?L=M

myelin, myeline A white fatty material, composed chiefly of lipids and lipoproteins, that encloses certain axons and nerve fibers.
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http://www.wordinfo.info/words/index/info/view_unit/1351/

Fatty material forming the nerve sheath around many axons. The process by which myelin is deposited in a developing embryo and young animal is called myelination.
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https://academy.allaboutbirds.org/bird-academys-a-to-z-glossary-of-bird-ter

An insulating and protective covering around nerve fibres essential to the healthy functioning of the nervous system. Begins to form around week 18.
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https://mybabymanual.co.uk/pregnancy-glossary/
myeline noun a white fatty substance that forms a medullary sheath around the axis cylinder of some nerve fibers
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https://www.encyclo.co.uk/local/20974

Greek myelos = marrow; hence, white fatty sheath of an axis cylinder; adjective - myelinated.
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https://www.encyclo.co.uk/local/21450

fatty insulation around an axon which improves the speed of conduction of nerve impulses
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https://www.encyclo.co.uk/local/22452

A fatty material that surrounds and insulates the axons of some neurons.
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https://www.encyclo.co.uk/local/22569

a soft, white, fatty material in the membrane of Schwann cells and certain neuroglial cells: the substance of the myelin sheath.
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https://www.infoplease.com/dictionary/myelin
No exact match found.