Term Name: embryonic cloaca
Synonyms: cloaca
Definition: 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].
Ontology: Cell Ontology [UBERON:0000163]

Relationships
develops into: rectal diverticulum
is part of: embryo internal anal region renal system
has parts: cloacal membrane embryonic cloacal epithelium embryonic cloacal lumen primitive urogenital sinus
is a type of: cloaca