X organ - sinus gland system

Japanese: X 器官‐サイナス腺系 - えっくすきかんさいなすせんけい
X organ - sinus gland system

…Although it is called a gland, it is not an independent endocrine gland because it is made up of the terminals of some of the axons of neurosecretory cells distributed in the X organ and other central nerves, which secrete neurosecretory substances into the body fluids. Therefore, it is often treated as a single entity called the X organ-sinus gland system. When the sinus gland of the crayfish is observed under an electron microscope, at least five types of nerve endings with neurosecretory granules can be distinguished. …

*Some of the terminology that refers to the "X organ-sinus gland system" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…腺とよばれているが,X器官や他の中枢神経に分布する神経分泌細胞の軸索の一部の末端が集まっていて,ここから神経分泌物が体液中に分泌されるので,独立した内分泌腺とはいえない。したがって,しばしばX器官‐サイナス腺系として一括して扱われる。ザリガニのサイナス腺を電子顕微鏡で観察すると,少なくとも5種類の神経分泌顆粒(かりゆう)をもつ神経末端が区別される。…

※「X 器官‐サイナス腺系」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

<<:  X-ray absorption spectrum

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