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1·Umbilical vein, ductus venosus and venous ligament and ligamentum teres hepatis were anatomized, observed and measured.

解剖观测脐静脉、静脉导管及肝圆韧带、静脉韧带等。

2·Objective To dissect and observe the ductus venosus in fetal liver.

目的解剖观测胎儿肝脏静脉导管的形态。

3·Objective To study the correlation between perinatal fetal prognosis and flow ratio of ductus venosus to umbilical vein (DV/UV).

目的本实验主要研究胎儿静脉导管（DV）血流量与脐静脉（UV）血流量比与围产儿预后的关系。

4·Methods: Umbilical vein, ductus venosus and venous ligament and ligamentum teres hepatis were anatomized, observed and measured.

方法：解剖观测脐静脉、静脉导管及肝圆韧带、静脉韧带等。