…Of these, the neurons of the central nervous system, as mentioned above, are neurons that lie between the input neurons and output neurons of the peripheral nervous system, and glia organize these neurons into a certain shape to form their living environment. While the central nervous system or brain of invertebrates is a mass of neurons and glia (solid brain), the brain of vertebrates, including humans, is a tubular brain. Phylogenetically, it is said that the tubular brain first appeared in the larvae of protochordates. … *Some of the terminology that refers to "solid brain" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…このうち,中枢神経系のニューロンは,上記のように,末梢神経系の入力ニューロンと出力ニューロンの間に介在するニューロンであり,グリアはこれらのニューロンを一定の形にまとめあげてそれらの生活環境を形成している。無脊椎動物の中枢神経系ないし脳がニューロンとグリアの塊(塊状脳solid brain)であるのに対して,ヒトを含めた脊椎動物の脳は管状脳tubular brainである。管状脳は系統発生的には原索動物の幼生において初めて出現するといわれる。… ※「solid brain」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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