Trunk ganglion

Japanese: 幹神経節 - かんしんけいせつ
Trunk ganglion

...the efferent elements of the autonomic nervous system are composed of preganglionic and postganglionic neurons.
[Sympathetic nervous system]

[Efferent elements]
The preganglionic neurons of the sympathetic nervous system are those whose cell bodies are located in the spinal cord at the level of the spinal cord segments from the first thoracic to the third lumbar, whose neurites enter the sympathetic trunk from the anterior root of the spinal nerve via the white rami communicating with the sympathetic trunk, and form synapses with the dendrites or cell bodies of the postganglionic neurons of the sympathetic nervous system in the truncal ganglion or prevertebral ganglion. The truncal ganglia are located on both sides of the spinal cord at a height ranging from the neck to the coccyx, with three on each side in the neck, 10-12 in the thoracic, 4-5 in the lumbar, and 3-5 in the sacral, and the sympathetic trunk is what connects them vertically.

*Some of the terminology that mentions "trunk ganglion" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…自律神経の遠心性要素は,節前ニューロンと節後ニューロンとの2者で構成される。
【交感神経系】

[遠心性要素]
 交感神経系の節前ニューロンをなすものは,その細胞体が第1胸髄から第3腰髄までの髄節の高さにおける脊髄内に存在し,神経突起が脊髄神経の前根から白交通枝を経て交感神経幹に入り,幹神経節または椎前神経節内の交感神経系節後ニューロンの樹状突起または細胞体とシナプスを形成するような神経細胞である。幹神経節は,頸部から尾骨部にまで至る範囲の高さで脊髄の両側にとびとびに存在し,1側当り頸部で3個,胸部で10~12個,腰部で4~5個,仙骨部で3~5個を数えるが,これらを縦に1本につなぐものが交感神経幹にほかならない。…

※「幹神経節」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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