男性不育症.ppt

文档介绍：男性不育症maleinfertility1正常生育过程的必备条件正常的生殖细胞:精子和卵子(配子)精子和卵子结合形成受精卵(合子)受精卵正常着床、发育及分娩2男性生育能力的必备条件正常的精子生成及成熟过程正常的精子转运过程正常的生殖性腺轴3456789减数分裂(meiosis)spermatogonia(mitosis)primaryspermatocyte(2NinDNAanddiploidinchromosomalnumber)(firstmeiosis)secondary(2NinDNAandhaploidsecondaryspermatocyteinchromosomalnumber)spermatocyte(secondmeiosis)roundroundspermatidspermatid(1NinDNAandhaploidinchromosomalnumber)10