cloaca
Common chamber into which the intestines and excretory system opens. Arises during development in all vertebrates, but in many it becomes subdivided, lost or incorporated into other structures.
Related Synonyms
cloacal chamber
vent
class Information
development_notes
hindgut endoderm and proctodeal ectoderm.
editor note
adding df link to embryonic cloaca leads to a cycle in uberon-simple, as cloaca is a suberclass of embryonic cloaca
external_definition
- A common passage for fecal, urinary, and reproductive discharge in most lower vertebrates as well as the terminal end of the hindgut before division into rectum, bladder, and genital primordia in mammalian embryos. [TFD][VHOG]
- Anatomical structure which is the common receptacle for the alimentary canal, Wolffian ducts, oviducts, and the bladder.[AAO]
has_dbxref
has_obo_namespace
uberon
has_relational_adjective
cloacal
homology_notes
A cloaca is apparently a primitive vertebrate feature because it occurs in most primitive gnathostomes and persists in the embryos of almost all vertebrates.[well established][VHOG]
in_subset
present in taxon
taxon_notes
Human beings only have an embryonic cloaca, which is split up into separate tracts during the development of the urinary and reproductive organs
class Relations
Subclass of
Related from
proximalmost part of
distalmost part of
luminal space of
connects
part of
- cloacal gland
- proctodeum portion of cloaca
- cloacal mucosa
- cloacal sphincter
- cloacal epithelium
- cloacal lumen
- transverse cloacal muscle
- serosa of cloaca
- cloacal muscle
- urodeum
- levator cloacae
- cloacal papilla
- coprodeum
- cloacal vent
- muscle layer of cloaca
- cloacal villus
- cloacal bursa
- cloacal fold
- amphibian cloacal gland
- submucosa of cloaca
surrounds
results in development of
develops from