…That is, at least one other autonomic neuron is interposed between the central nervous system and the effector organ, and such a collection of autonomic neurons is called an autonomic ganglion. Autonomic nerve origin neurons with cell bodies in the central nervous system are called preganglionic neurons, and their axons are called preganglionic fibers. Neurons with cell bodies in the autonomic ganglion are called postganglionic neurons, and their axons are called postganglionic fibers. Preganglionic neurons that synapse with postganglionic neurons in the autonomic ganglion are acetylcholineergic neurons that use acetylcholine as a chemical transmitter, while postganglionic neurons that directly connect to effector organs are either acetylcholineergic or noradrenergic. … *Some of the terminology that mentions "preganglionic neuron" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…すなわち,中枢神経系と効果器の間には少なくとももう一つ別の自律神経ニューロンが介在し,このような自律神経ニューロンの集合を自律神経節autonomic ganglionという。中枢神経系内に細胞体をもつ自律神経起始ニューロンのことを節前ニューロンpreganglionic neuron,その軸索を節前繊維preganglionic fiberと呼び,自律神経節に細胞体をもつニューロンのことを節後ニューロンpostganglionic neuron,その軸索を節後繊維postganglionic fiberと呼ぶ。自律神経節で節後ニューロンとシナプス結合する節前ニューロンが,アセチルコリンを化学伝達物質とするアセチルコリン作動性ニューロンであるのに対して,効果器に直接に連絡する節後ニューロンには,アセチルコリン作動性のものと,ノルアドレナリン作動性のものとがある。… ※「preganglionic neuron」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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