…In principle, all cells that make up living organisms have contractility, including muscle cells, but the cells whose main purpose is to cause bodily movement through contraction are called muscle cells (Figure 1). Most muscle cells are long and fibrous, and therefore muscle cells are also called muscle fibers. All muscles develop from the mesoderm, but the pupillary sphincter and the arrector pili muscles of the skin originate from the ectoderm. … *Some of the terms that mention "muscle fiber" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…生物体を構成する細胞は原則として,筋細胞に限らず,すべて収縮性を有するが,そのうちとくに収縮によって体の運動を起こすことを主目的とした細胞を筋細胞muscle cellという(図1)。筋細胞の多くは細長い繊維状で,したがって筋細胞のことを筋繊維muscle fiberともいう。筋肉はすべて中胚葉から発生するが,瞳孔括約筋や皮膚の立毛筋は外胚葉に由来する。… ※「muscle fiber」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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