Spinous process

Japanese: 棘突起 - きょくとっき
Spinous process

…the neural arch has a large transverse process on each side that forms an articulation with the rib. There is also a median process on the back called the neural spine (spinous process) that serves as an attachment point for segmental muscles. In fish and primitive tetrapods, the tail vertebrae have a V-shaped hematopoietic arch symmetrically above and below the neural arch on the ventral side of the vertebral body.

*Some of the terminology explanations that mention "spinous process" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…神経弓の両側にはがんじょうな横突起が突出し,肋骨との関節部をなす。また背方には神経棘(きよく)(棘突起)という正中突起があり,体節性の筋肉の付着部となる。魚類と原始的四足動物の尾部の椎骨には,椎体の腹側に神経弓と上下対称をなしてV型の血道弓がある。…

※「棘突起」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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