循环系统的发生 重庆医科大学 组胚教研室 2003-10
循环系统的发生 重庆医科大学 组胚教研室 2003-10
原始心血管系统的建立 Villus Amniotic cavity Amnion 血岛 Blood vessel Heart Allantois Connecting stalk Yolk sac- Chorion Blood island Blood vessel Blood Endothelial Mesenchyme cells Primitive island cell blood cell
一、原始心血管系统的建立 血 岛
早期胎血循环 dorsal intersegmental arteries tertiary villus anterior cardinal dorsal connecting veins aortae stalk heart tubes umbilical arteries vitelline umbilical veins vein chorion vitelline arteries vascular plexus on yolk sac
早期胎血循环
Common cardinal vein Anterior cardinal vein Dorsal aorta Posterior cardinal Aortic arches vein Chorionic (II and Ill) villus Internal carotid artery- Chorion Heart Aortic sac Umbilical vein and artery Vitelline Vitelline vein artery
aortic arches anterior.common and posterior cardinal veins sinus venosus dorsal aorta 卵黄循环 intersegmental arteries 脐循环 umbilical artery 胚体循环 hea vitelline vein vein chorion vitelline artery
卵黄循环 脐循环 胚体循环