allantois

As nouns the difference between allantois and chorion

is that allantois is a sac, having a number of functions, that develops in the alimentary canal of the embryos of mammals, birds and reptiles while chorion is the protective and nutritive membrane in higher vertebrates that attaches the fetus to the uterus.

Yolksac is likely misspelled.

Yolksac has no English definition.

As a noun allantois is

a sac, having a number of functions, that develops in the alimentary canal of the embryos of mammals, birds and reptiles.

As nouns the difference between allantois and allantoin

is that allantois is a sac, having a number of functions, that develops in the alimentary canal of the embryos of mammals, birds and reptiles while allantoin is a diureide of glyoxylic acid, used in various pharmaceutical and cosmetic products; or a derivative of this compound.

As nouns the difference between allantoids and allantois

is that allantoids is plural of allantoid while allantois is a sac, having a number of functions, that develops in the alimentary canal of the embryos of mammals, birds and reptiles.

As nouns the difference between allantois and allantoins

is that allantois is (anatomy) a sac, having a number of functions, that develops in the alimentary canal of the embryos of mammals, birds and reptiles while allantoins is .

In anatomy|lang=en terms the difference between allantois and chorioallantois

is that allantois is (anatomy) a sac, having a number of functions, that develops in the alimentary canal of the embryos of mammals, birds and reptiles while chorioallantois is (anatomy) the vascular extraembryonic membrane, formed by the fusion of the allantois and the chorion, that makes up the placenta in most mammals; the chorioallantoic membrane.

As nouns the difference between allantois and chorioallantois

is that allantois is (anatomy) a sac, having a number of functions, that develops in the alimentary canal of the embryos of mammals, birds and reptiles while chorioallantois is (anatomy) the vascular extraembryonic membrane, formed by the fusion of the allantois and the chorion, that makes up the placenta in most mammals; the chorioallantoic membrane.

As a noun allantois

is a sac, having a number of functions, that develops in the alimentary canal of the embryos of mammals, birds and reptiles.

As an adjective allantoic is

of, pertaining to or derived from the allantois.