Myelinscheide/en: Unterschied zwischen den Versionen
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Synonym: myelin sheath; the isolating layer formed around the [[Axon/en|axon]] of the [[Nervenzellen/en|nerve cells]] during myelinization (myelogenesis). | Synonym: myelin sheath; the isolating layer formed around the [[Axon/en|axon]] of the [[Nervenzellen/en|nerve cells]] during myelinization (myelogenesis). | ||
| − | In the peripheral nervous system, the product of the multiple encasement of [[nerve]] fibers by the myelin-rich [[cell membrane]] evagination of Schwann cells; in the [[CNS]], formed by the supporting oligodendrocytes ([[glial cells]]). It is discontinuous (segmented), whereby the segments (internodes) are separated by constrictions ([[Ranvierringe|Ranvier-Schnürringe]]). The fibres wrapped in this way are referred to as marrowy or marrowy. | + | In the peripheral nervous system, the product of the multiple encasement of [[Nerv/en|nerve]] fibers by the myelin-rich [[Zellmembran/en|cell membrane]] evagination of Schwann cells; in the [[ZNS/en|CNS]], formed by the supporting oligodendrocytes ([[Gliazellen/en|glial cells]]). It is discontinuous (segmented), whereby the segments (internodes) are separated by constrictions ([[Ranvierringe|Ranvier-Schnürringe]]). The fibres wrapped in this way are referred to as marrowy or marrowy. |
The destruction of the myelin sheath (myelin sheath decay = demyelination), which occurs under the formation of marrow balls, leads to a loss of function. | The destruction of the myelin sheath (myelin sheath decay = demyelination), which occurs under the formation of marrow balls, leads to a loss of function. | ||
Aktuelle Version vom 22. Mai 2019, 00:26 Uhr
Synonym: myelin sheath; the isolating layer formed around the axon of the nerve cells during myelinization (myelogenesis).
In the peripheral nervous system, the product of the multiple encasement of nerve fibers by the myelin-rich cell membrane evagination of Schwann cells; in the CNS, formed by the supporting oligodendrocytes (glial cells). It is discontinuous (segmented), whereby the segments (internodes) are separated by constrictions (Ranvier-Schnürringe). The fibres wrapped in this way are referred to as marrowy or marrowy.
The destruction of the myelin sheath (myelin sheath decay = demyelination), which occurs under the formation of marrow balls, leads to a loss of function.
https://de.wikipedia.org/wiki/Myelin (Wikipedia CC-by-sa-3.0)
https://de.wikipedia.org/wiki/Myelinscheide (Wikipedia CC-by-sa-3.0)