2)输尿管芽→反复分支→集合小管、肾 盏、肾盂、输尿管 Collecting tubules Outgrowing collecting tubules Major calyx Metanephric blastema∩ 2 Pelvis Minor calyx- UUt Ureter enal pelvis D
2) 输尿管芽 → 反复分支→集合小管、肾 盏、肾盂、输尿管
输尿管芽 3)生后肾组织 →肾单位→与集合小管 相通 诱导 Metanephric tissue caps Cell o clusters 3。= Collecting Bowmans A tubule B Distal convoluted Distal convolute tubule tubule Henes Glomerulus loop. \Proximal Bowmans Collecting convoluted Bowmans tubule capsule Henle E
3) 生后肾组织→ → → 肾单位→ 与集合小管 相通 输尿管芽 诱导
4)肾上升→腹腔(腰部) Mesonephros Metanephros Gonad Gonad Allantois Cloaca Bladder. )2 Phallus Urogenital MetanephrIc sInus tissue Ureter Rectum
4) 肾上升 → 腹腔（腰部）
2.膀胱和尿道的发生 1)尿生殖窦(上段)→膀胱→尖与尿囊相通 (以后闭锁) Allantois Urinary bladder Urachus Prostate gland Pelvic Ureter Seminal part of Prostatic and vesicle urogenital membranous sInus Seminal urethra Ductus vesicle deferens Def urogenital Penile urethra sInus Anorectal canal B
2. 膀胱和尿道的发生 1) 尿生殖窦 (上段) → 膀胱 → 尖与尿囊相通 (以后闭锁)
2)中段→尿道(男仅前列腺部与膜部) 3)下段→尿道海绵体部(男),阴道 前庭(女) Allantois Urinary bladder Urachus Prostate gland Pelvic Ureter Seminal part of Prostatic and\ vesicle urogenital membranous sInus Seminal urethra Ductus vesicle deferens Def urogenital Penile urethra sInus A Anorectal canal B
2) 中段 → 尿道（男仅前列腺部与膜部） 3) 下段 → 尿道海绵体部（男）， 阴道 前庭（女）