-Efferent Wolffian ducts Primitive duct gonad Pelvic Developing accessory testis glands Mullerian duct Vas deferens Bladder Testis and epididymis Figure 2.1 Differentiation of the male reproductive system by development of the Wolffian ducts and regression of the Mullerian ducts.The male system consists of paired efferent ducts,epididymis and vas deferens which converge at the urethra in the region of the accessory glands (e.g.prostate and seminal vesicles)
Figure 1.9 Generalized diagram to show formation of the female reproductive system.The very young embryo has the potential to form either a male or a female Oviduct genital system since it has a rudimentary development of both male (Wolffian)and female Ovary Gonad Vestigial (Mullerian)duct systems.The Wolffian Wolffian ducts regress in female duct- embryos whilst the Mullerian Uterine horn ducts give rise to paired oviducts Wolffian Mullerian duct and uterine horns,a cervix and a duct- Bladder vagina Cervix Vagina
二雄性生殖机能的发育
二.雄性生殖机能的发育
1.睾丸下降 39.0℃ Pampiniform ▲ 定义： plexus of artery and vein 常见病症：单侧隐睾 双侧隐睾 下降时间： 33.0℃ Testis. Epididymis 2.初情期前 ▲一些变化：
1.睾丸下降 ▲ 定义： ▲ 常见病症：单侧隐睾 双侧隐睾 ▲ 下降时间： 2.初情期前 ▲ 一些变化：
3.初情期 ▲定义： ▲特点： ▲时间： ▲生产管理注意事项： 4.性成熟 ▲定义：
3.初情期 ▲ 定义： ▲ 特点： ▲ 时间： ▲ 生产管理注意事项： 4.性成熟 ▲ 定义：