Gliazellen/en: Unterschied zwischen den Versionen
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| − | The glial cells form the supporting tissue of the [[nervous system]] and are involved in the (saltatory) propagation of excitation. Glial cells are significantly more numerous than [[neurons]]: They represent almost 90% of all cells of the [[CNS]]. Glial cells perform very different functions and therefore differ considerably in their morphology. We distinguish the glial cells of the [[PNS|peripheral nervous system]] (Schwann cells) from the glial cells of the [[ | + | The glial cells form the supporting tissue of the [[Nervensystem/en|nervous system]] and are involved in the (saltatory) propagation of excitation. Glial cells are significantly more numerous than [[neurons]]: They represent almost 90% of all cells of the [[ZNS/en|CNS]]. Glial cells perform very different functions and therefore differ considerably in their morphology. We distinguish the glial cells of the [[PNS/en|peripheral nervous system]] (Schwann cells) from the glial cells of the [[ZNS/en|central nervous system]]. In the CNS there are the macroglia (these are the astrocytes and the oligodendrocytes), the microglia (these are the Hortega cells) and finally the ependym cells. |
*The '''Schwann cells''' form the myelin sheaths in the PNS and the '''oligodendrocytes''' form the myelin sheaths in the CNS. *The '''astrocytes'' are involved in the formation of the blood-brain barrier, *the '''ependym cells'' line the brain ventricles and *the '''hoard gazelles''' are phagocytes of the brain. | *The '''Schwann cells''' form the myelin sheaths in the PNS and the '''oligodendrocytes''' form the myelin sheaths in the CNS. *The '''astrocytes'' are involved in the formation of the blood-brain barrier, *the '''ependym cells'' line the brain ventricles and *the '''hoard gazelles''' are phagocytes of the brain. | ||
| − | https://de.wikipedia.org/wiki/Gliazelle | + | https://de.wikipedia.org/wiki/Gliazelle <sub>([https://de.wikipedia.org/wiki/Wikipedia:Lizenzbestimmungen_Commons_Attribution-ShareAlike_3.0_Unported Wikipedia CC-by-sa-3.0])</sub> |
Aktuelle Version vom 22. Mai 2019, 00:24 Uhr
The glial cells form the supporting tissue of the nervous system and are involved in the (saltatory) propagation of excitation. Glial cells are significantly more numerous than neurons: They represent almost 90% of all cells of the CNS. Glial cells perform very different functions and therefore differ considerably in their morphology. We distinguish the glial cells of the peripheral nervous system (Schwann cells) from the glial cells of the central nervous system. In the CNS there are the macroglia (these are the astrocytes and the oligodendrocytes), the microglia (these are the Hortega cells) and finally the ependym cells.
- The Schwann cells form the myelin sheaths in the PNS and the oligodendrocytes form the myelin sheaths in the CNS. *The astrocytes are involved in the formation of the blood-brain barrier, *the ependym cells line the brain ventricles and *the hoard gazelles are phagocytes of the brain.
https://de.wikipedia.org/wiki/Gliazelle (Wikipedia CC-by-sa-3.0)