allantois
A membranous sac that develops from the posterior part of the alimentary canal in the embryos of mammals, birds, and reptiles, and it is important in the formation of the umbilical cord and placenta in mammals[VHOG]. [ http://en.wikipedia.org/wiki/Allantois ]
Term info
allantois
pheno_slim
http://upload.wikimedia.org/wikipedia/commons/a/a5/Gray25.png
a diverticulum of the hindgut endoderm [ISBN:0073040584 (Vertebrates, Kardong)]
A membranous sac that develops from the posterior part of the alimentary canal in the embryos of mammals, birds, and reptiles, and it is important in the formation of the umbilical cord and placenta in mammals. [TFD][VHOG]
part_of embryo in EHDAA2 - note differences in humans
uberon
allantoic bud
allantoic
Structures homologous to the four extraembryonic membranes of reptiles and birds appear in mammals: amnion, chorion, yolk sac, and allantois.[well established][VHOG]
UBERON:0004340
Term relations
- extraembryonic membrane
- has developmental contribution from some endoderm
- has developmental contribution from some splanchnic layer of lateral plate mesoderm
- develops_from some cloaca
- has part some (part of some renal system)