…The myelin sheath is actually a glial cell membrane that often surrounds the axon in several layers. In the central nervous system, the glia that form this myelin sheath are a type of glia called oligodendroglia, and in the peripheral nervous system, they are Schwann's cells (glial cells of the peripheral nervous system). If the dendrites or axon of a neuron are separated from the cell body, the separated parts always degenerate and disappear. … *Some of the terminology that mentions "Schwann's cell" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…髄鞘の実体は神経膠の細胞膜であって,軸索のまわりをなん層にもなって取り巻いていることが多い。この髄鞘を形成する神経膠は,中枢神経系ではオリゴデンドログリアoligodendrogliaと呼ばれる神経膠の一種であり,末梢神経系ではシュワン細胞Schwann’s cell(末梢神経系の神経膠)である。 ニューロンの樹状突起や軸索を細胞体から切り離すと,切り離された部分は必ず変性して消失してしまう。… ※「Schwann's cell」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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