embryonic cloacaGo to external page http://purl.obolibrary.org/obo/UBERON_0000163
endoderm-lined chamber that develops as pouch-like dilation of the caudal end of the hindgut and receives the allantois ventrally and two mesonephric ducts laterally; caudally it ends blindly at the cloacal membrane formed by the union of proctodeal (anal pit) ectoderm and cloacal endoderm, with no intervening mesoderm[MP]. [ http://en.wikipedia.org/wiki/Cloaca_(embryology) ]
this class represents the embryonic form of the cloaca, as found in both mammals and non-mammals.
- part of some embryo
- part of some internal anal region
- part of some renal system
- has developmental contribution from some intermediate mesoderm