…Sperm are produced in the convoluted seminiferous tubules and sent to the epididymis via the straight seminiferous tubules and the rete testis. Between each convoluted tubule is a loose connective tissue called interstitial tissue, which contains blood vessels, nerves, and interstitial cells (Leydig cells). The interstitial cells secrete the male hormone testosterone. … From [Testicles]…As the individual matures, the primary spermatocytes enter the maturation phase, reduce their chromosomes by half, and become secondary spermatocytes, which then become spermatids and sperm. This series of processes is driven mainly by male hormones secreted by Leydig cells derived from connective tissue. [Urasaki Hiroshi]. … From [Endocrine Glands]In fish, both tissues are called the internephron. (8) Testis Also called the testis, the Leydig cells, or interstitial cells, of the testes of vertebrates secrete male steroid hormones. (9) Ovaries The interstitial cells secrete female steroid hormones. *Some of the terminology that mentions "Leydig cell" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…曲精細管の中で精子を作り,直精細管,精巣網を経て精巣上体に送る。一方それぞれの曲精細管の間は間質結合組織と呼ばれる疎性結合組織から成り,その中に血管,神経,間細胞(ライディヒ細胞Leydig cell)を含む。間細胞は,男性ホルモンであるテストステロンtestosteronを分泌する。… 【精巣】より…第一精母細胞は個体の成熟にともない,成熟分裂期に入って染色体を半減して第二精母細胞となり,ついで精細胞,精子となる。この一連の過程は主として結合組織由来のライディヒ細胞Leydig cellが分泌する男性ホルモンによって進行する。【浦崎 寛】。… 【内分泌腺】より…魚類では両方の組織をいっしょにして間腎ということもある。(8)精巣 睾丸ともいい,脊椎動物の精巣のライディヒ細胞Leydig cellすなわち間細胞は,ステロイドである雄性ホルモンを分泌する。(9)卵巣 間細胞からステロイドである雌性ホルモンを分泌する。… ※「Leydig cell」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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