...This phenomenon is called decapacitation, and has been extensively studied in rabbit sperm. Capacitated sperm become capable of undergoing the acrosome reaction. The acrosome reaction is a phenomenon in which the permeability of the cell membrane and outer acrosomal membrane of the sperm acrosome increases, hydrolytic enzymes contained inside the acrosome are released to the outside of the sperm, and at the same time, the cell membrane and outer acrosomal membrane of the acrosome gradually disappear, exposing the inner acrosomal membrane (Figure). ... *Some of the terminology that refers to "acrosome reaction" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…このような現象を脱受精能獲得といって,ウサギ精子についてよく研究されている。 受精能を獲得した精子は,先体反応acrosome reactionを起こすことが可能になる。先体反応というのは,精子の先体acrosome部分の細胞膜および先体外膜と呼ばれる部分の透過性が増し,先体内部に含まれる加水分解酵素が精子外部に放出されると同時に,先体部分の細胞膜と先体外膜はしだいに消失して,先体内膜が裸出する現象である(図)。… ※「acrosome reaction」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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