ヤスヤマ　コウジ   Kouji Yasuyama   泰山　浩司    所属   川崎医療福祉大学  リハビリテーション学部 言語聴覚療法学科    職種   特任教授
論文種別	原著
言語種別	英語
査読の有無	査読なし
表題	Fine structure of the spermathecal duct of the cricket, Gryllus bimaculatus.
掲載誌名	正式名：Kawasaki Medical Journal, Liberal Arts and Science course ISSNコード：03865398
巻・号・頁	13,pp.81-93
著者・共著者	Yasuyama Kouji
発行年月	1987/12
概要	The spermathecal duct of Gryllus bimaculatus is lined with a cuticular intima. Its wall consisits of three cellular types: glandular cells, ductule carrying cells and epithelial cells. The glandular cells are absent from the proximal region near the junction of the duct with the genital chamber and from the distal region near the junction with the spermatheca. They are restricted to the median region where the spermathecal duct is highly convoluted. Each glandular cell has a cavity formed by an invagination of the apical cytoplasmic membrane. The cavity of the glandular cells and the lumen of the spermathecal duct are connected by a cuticular efferent ductule which is surrounded by a ductule carrying cell. The epithelial cells contain bundles of longitudinally arranged microtubules and large deposits of glycogen. In the epithelial cells, mitochondria are distributed mostly in the apical cytoplasmic zone. The concentration of mitochondria in the apical zone suggests their involvement in ion transport required for the regulation of the microenvironment within the lumen of the spermathecal duct. The muscle fibers surrounding the spermathecal duct are innervated by axons which contain electron-dense vesicles. The presence of glandular cells in the spermathecal duct is characteristic of G. bimaculatus.