About: Cloaca (embryology)

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The cloaca is a structure in the development of the urinary and reproductive organs. The hind-gut is at first prolonged backward into the body-stalk as the tube of the allantois; but, with the growth and flexure of the tail-end of the embryo, the body-stalk, with its contained allantoic tube, is carried forward to the ventral aspect of the body, and consequently a bend is formed at the junction of the hind-gut and allantois. At a later stage the Wolffian duct and Müllerian duct open into its ventral portion.

Attributes	Values
rdf:type	Thing wikidata:Q4936952 anatomical structure embryology yago:Abstraction100002137 yago:Biology106037666 yago:Cognition100023271 yago:Content105809192 yago:Discipline105996646 yago:Embryology106071426 yago:KnowledgeDomain105999266 yago:LifeScience106037298 yago:NaturalScience106000400 yago:PsychologicalFeature100023100 building yago:Science105999797 umbel-rc:AnimalBodyPart umbel-rc:Embryology
rdfs:label	Cloaca (embryology) (en)
rdfs:comment	The cloaca is a structure in the development of the urinary and reproductive organs. The hind-gut is at first prolonged backward into the body-stalk as the tube of the allantois; but, with the growth and flexure of the tail-end of the embryo, the body-stalk, with its contained allantoic tube, is carried forward to the ventral aspect of the body, and consequently a bend is formed at the junction of the hind-gut and allantois. At a later stage the Wolffian duct and Müllerian duct open into its ventral portion. (en)
foaf:name	Cloaca (en)
name	Cloaca (en)
foaf:depiction
dcterms:subject	Embryology of digestive system
Wikipage page ID	8087820 (xsd:integer)
Wikipage revision ID	1044532240 (xsd:integer)
Link from a Wikipage to another Wikipage	Endoderm Müllerian duct Anorectal canal Urinary tract Vagina Pubic symphysis Navel Cloacal exstrophy Cloacal membrane Embryo Development of the urinary and reproductive organs Allantois Body-stalk Persistent cloaca Abdominal wall Birth defect Ectoderm Embryology of digestive system Rectum Urogenital sinus Wolffian duct Hind-gut
sameAs	Cloaca (embryology) Cloaca (embryology) Cloaca (embryology)
dbp:wikiPageUsesTemplate	dbt:Gray's dbt:About dbt:Authority_control dbt:Portal_bar dbt:Reflist dbt:EmbryologySwiss dbt:Development_of_digestive_system dbt:Development_of_urinary_and_reproductive_systems dbt:Developmental-biology-stub dbt:Infobox_embryology
thumbnail	wiki-commons:Special:FilePath/Gray1116.png?width=300
caption	Tail end of human embryo thirty-two to thirty-three days old. Cloaca is visible at center left. The endodermal cloaca is labeled with green, while the ectodermal cloaca is seen as a colorless crest on the outside. (en)
has abstract	The cloaca is a structure in the development of the urinary and reproductive organs. The hind-gut is at first prolonged backward into the body-stalk as the tube of the allantois; but, with the growth and flexure of the tail-end of the embryo, the body-stalk, with its contained allantoic tube, is carried forward to the ventral aspect of the body, and consequently a bend is formed at the junction of the hind-gut and allantois. This bend becomes dilated into a pouch, which constitutes the endodermal cloaca; into its dorsal part the hind-gut opens, and from its ventral part the allantois passes forward. At a later stage the Wolffian duct and Müllerian duct open into its ventral portion. The cloaca is, for a time, shut off from the anterior by the cloacal membrane, formed by the apposition of the ectoderm and endoderm, and reaching, at first, as far forward as the future umbilicus. Behind the umbilicus, however, the mesoderm subsequently extends to form the lower part of the abdominal wall and pubic symphysis. By the growth of the surrounding tissues the cloacal membrane comes to lie at the bottom of a depression, which is lined by ectoderm and named the ectodermal cloaca. (en)
days	15 (xsd:integer)
GivesRiseTo	Urogenital sinus and Anorectal canal (en)
precursor	Endoderm
gold:hypernym	Structure
precursor	Endoderm
prov:wasDerivedFrom	wikipedia-en:Cloaca_(embryology)?oldid=1044532240&ns=0
page length (characters) of wiki page	3882 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:Cloaca_(embryology)
is Link from a Wikipage to another Wikipage of	Anorectal canal Development of the reproductive system Development of the urinary system Intersex medical interventions Strophurus williamsi Cloaca Cloaca (disambiguation) Allantois Caudal duplication Persistent cloaca Fetal membranes Human embryonic development Urogenital sinus Entodermal cloaca Embryonic cloaca Ectodermal cloaca Cloacal duct
is Wikipage redirect of	Entodermal cloaca Embryonic cloaca Ectodermal cloaca Cloacal duct

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