Anhui Medical University Development of the Urogenital System Lyu Zhengmei Department of Histology and Embryology Anhui Medical University
Anhui Medical University Development of the Urogenital System Lyu Zhengmei Department of Histology and Embryology Anhui Medical University
Anhui Medical University >ORIGINS-mesoderm -paraxial mesoderm:somite -intermediate mesoderm urinary and genital system -lateral mesoderm paraxial neural intermediate mesoderm groove mesoderm Paraxial Mesoderm Dorsal aorta Intemmediate Mesoderm Somatic mesodem Splanchnic lateral mesodem coelom endoderm notochord mesoderm
Anhui Medical University ORIGINS-mesoderm -paraxial mesoderm: somite -intermediate mesoderm urinary and genital system -lateral mesoderm neural groove paraxial mesoderm intermediate mesoderm lateral mesoderm endoderm notochord
Anhui Medical University Mesonephros Vitelline duct The Cut line for B origins of origins of Allantois urogenital Meso- urogenital system Future nephrc urogenital system?? duct sinus (bladder) Parameso- nephric D Cloaca duct Future anorectal canal Gonad
Anhui Medical University Part I Introduction The origins of urogenital system?? 【】※ origins of urogenital system
Anhui Medical University differentiation of intermediate mesoderm Mesonephros duct Cut line for B intermediate mesoderm Future duct sinus Nephrotome nephrogenic cord nephric duct Future anorectal canal Gonad urogenital ridge mesonephric ridge,gonadal ridge
Anhui Medical University •intermediate mesoderm Nephrotome nephrogenic cord urogenital ridge mesonephric ridge，gonadal ridge differentiation of intermediate mesoderm
Anhui Medical University 1.Formation of nephrotome Segmented intermediate mesoderm Nephrotome: (pronephric system) Vestigal pronephric The cephalic portion system of intermediate Unsegmented mesoderm becomes intemmediate mesoderm Vitelline (mesonephric system) duct segmented, Mesonephric excretory units which forms Allantois Mesonephric Duct pronephric system Cloaca Unsegmented mesoderm (metan ephric system) and degenerates early
Anhui Medical University Nephrotome: The cephalic portion of intermediate mesoderm becomes segmented, which forms pronephric system and degenerates early. 4 weeks 1.Formation of nephrotome