Definitionn. the vascular fetal membrane that lies below the chorion and develops from the hindgut in many embryonic higher vertebrates
Last update: July 27, 2015
0
It is urged that the imperfect placenta of the bandicoots instead of being vestigial, may be an instance of parallelism, and that in marsupials generally the allantois failed to form a placental connexion. [Please select]
0
The allantois also contains a fluid which is known as the allantoid liquid. [Please select]
0
Endochorium: the layer of the allantois that lines the chorium; the inner layer of the chorium. [Please select]
0
The allantois is composed of two layers, which form a closed sac in connection with the urachus, or the tube which extends from the fetal bladder through the umbilical cord. [Please select]
Do you have a better example in your mind? Please submit your sentence!