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
肺动脉 每侧 二、心脏的发生 成人心脏 心包 3脉Inferior vena ca 下部和下来的缺 :腔静同到右心房 为相互连接的心 右心室Rgbt×eniricle (细胞)，它能自 左心室
二、心脏的发生 成人心脏
(一)原始心脏的形成 口咽膜头侧中胚层（生心区) 左右心管 左右围心腔 头褶使心管与围心腔转到咽的腹侧。 随着胚盘卷折 侧褶使左右心管合并成一条心管， 并逐渐陷入围心腔（心包腔）
（一）原始心脏的形成 口咽膜头侧中胚层（生心区） 左右心管 左右围心腔 头褶使心管与围心腔转到咽的腹侧。 随着胚盘卷折 侧褶使左右心管合并成一条心管， 并逐渐陷入围心腔(心包腔)
Hindgut Endoderm Foregut Amniotic cavity Connecting Heart Ectoderm tube_ stalk Angiogenic cell cluster Allantois Pericardial cavity Buccopharyngeal membrane Cloacal A membrane B Buccopharyngeal Cloacal membrane membrane Lung bud Liver bud Midgun Heart tube Remnant of the buccopharyngeal membrane Allantois Vitelline duct Yolk sac C D
Foregut Dorsal aorta Dorsal mesocardium (breaking down) 1st aortic arch Foregut Buccopharyngeal membrane Pericardial cavity Myocardial mantle Endocardial heart tube
8 cardiogenic area plane of pericardial coelom embryonic ectoderm section C pericardial coelom amnion level of oropharyngeal section B membrane yolk sac cardiogenic cord B embryonic endoderm neural splanchnic mesoderm layer plate pericardial coelom amnion. connecting stalk oropharyngeal membrane yolk sac septum transversum neural plate cloacal/ A cloacal membrane cardiogenic cord membrane allantois