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allantois

n. [胚] 尿囊；[胚] 尿膜

1、[胚]尿囊

... 3.卵黄囊(yolk sac)： 4.尿囊(allantois)： 5.脐带(umbilical cord)： ...

2、[胚]尿膜

尿膜(Allantois) 尿膜由胚胎的后肠向外生长形成。其功能相当于胚体外临时膀胱，并对胎儿的发育起缓冲保护作用。

3、尿囊

...山梨糖醇（sorbitol）尿囊（Allantois）甘草酸钾（Dipotassium glycyrrhizate） ...

4、尿膜

...allantoin llantoin 尿囊素allantois 尿膜allele 等位基因 ...

allantois s尿囊

chorio allantois尿囊绒膜

allantoid allantois尿囊

Allantois Chorioidea尿囊绒膜

allantois diverticulum尿囊憩室

chorioidea allantois尿囊脉络膜;尿囊绒膜

Allantois epithelium尿囊外皮

chick embryo allantois鸡胚尿囊

chorio-allantois尿囊绒毛膜;翻译

生物学

n.vascular fetal membrane that develops from the hindgut in embryonic higher vertebrates (reptiles, birds and mammals)

1.
N（名词） a membranous sac growing out of the ventral surface of the hind gut of embryonic reptiles, birds, and mammals. It combines with the chorion to form the mammalian placenta 尿囊

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