Inner sheath

The Schwann cells covers strongly about the axon. Where the central nervous system the myelin is established by oligodendrocytes, it is a glial cells in the brain... 8)

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Schwan cells produce myelin sheath but are found in peripheral neurons only, the neurons of CNS are derived from Oligodendrocytes. I hope it's a bit clear now.

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As far as I know, you are perfectly right. Schwann cells produce myelin sheath. Myelin sheath surrounds the axon. Neurilemma wraps the myelin sheath. Here, this may help: http://www.waybuilder.net/sweethaven/MedTech/Neurology/fig0103.jpg

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Hi, What is the difference between Schwann's Cells, myelin sheath and neurilemma? Does Schwann's cells produce the myelin sheath, and the myelin sheath surrounds the axon, kind of, but what does the neurilemma do? Does it wrap the myelin sheath? Thanks! ...

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... "horn". It is %100 Keratin. Also, true horns do not branch but the American Pronghorn Atelope has forked horns that consist of a keratin sheath and a bony core....sounds like a horn right? BUT they shed them once a year. I think we may need some new terms for several species!

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