…This is because each coelomic sac first divides into two chambers, the upper and lower, and only the upper chamber participates in the formation of a segmented structure. This is called a somite or protomite (formerly incorrectly called a protospine). When part of the outer wall of the chamber becomes mesenchymal and disperses into cells, the remaining part becomes a myotome, which is the origin of skeletal muscle. … *Some of the terminology explanations that mention "somite" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…それは各体腔囊が,まず上下2房に分かれてから上房のみが分節構造の形成にあずかるからである。これを体節somiteまたは原体節(古くは誤って原脊椎)と呼んでいる。そしてさらにその一部,房の外側の壁が間葉化して細胞に分散してしまうと,残った部分は骨格筋のもとである筋節となる。… ※「somite」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 |
>>: La Somme (English spelling)
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