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Statements

Subject Item
dbr:Cloaca_(embryology)
rdf:type
yago:Embryology106071426 wikidata:Q4936952 umbel-rc:AnimalBodyPart yago:PsychologicalFeature100023100 yago:Biology106037666 yago:Discipline105996646 yago:Science105999797 yago:Cognition100023271 yago:Content105809192 yago:KnowledgeDomain105999266 yago:Abstraction100002137 dbo:AnatomicalStructure umbel-rc:Embryology yago:LifeScience106037298 owl:Thing dbo:Building dbo:Embryology yago:NaturalScience106000400
rdfs:label
Cloaca (embryology)
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.
foaf:name
Cloaca
dbp:name
Cloaca
foaf:depiction
n9:Development_of_external_sexual_organs_in_the_male_and_female_Gray1119.png n9:Gray1116.png n9:Gray983.png n9:Gray977.png n9:Gray992.png n9:Gray1115.png n9:Gray991.png n9:Gray1118.png
dcterms:subject
dbc:Embryology_of_digestive_system
dbo:wikiPageID
8087820
dbo:wikiPageRevisionID
1044532240
dbo:wikiPageWikiLink
dbr:Birth_defect dbr:Müllerian_duct dbr:Ectoderm dbr:Allantois dbr:Wolffian_duct dbr:Rectum dbr:Development_of_the_urinary_and_reproductive_organs dbr:Pubic_symphysis dbr:Abdominal_wall dbc:Embryology_of_digestive_system dbr:Navel dbr:Body-stalk dbr:Embryo dbr:Urogenital_sinus dbr:Urinary_tract dbr:Persistent_cloaca dbr:Vagina dbr:Anorectal_canal dbr:Cloacal_exstrophy dbr:Endoderm dbr:Cloacal_membrane dbr:Hind-gut
owl:sameAs
n11:4i2TB wikidata:Q5134733 freebase:m.026q_05
dbp:wikiPageUsesTemplate
dbt:Reflist dbt:Authority_control dbt:Infobox_embryology dbt:Development_of_urinary_and_reproductive_systems dbt:EmbryologySwiss dbt:Gray's dbt:Developmental-biology-stub dbt:Development_of_digestive_system dbt:About dbt:Portal_bar
dbo:thumbnail
n9:Gray1116.png?width=300
dbp: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.
dbo: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.
dbp:days
15
dbp:givesriseto
Urogenital sinus and Anorectal canal
dbp:precursor
dbr:Endoderm
gold:hypernym
dbr:Structure
dbo:precursor
dbr:Endoderm
prov:wasDerivedFrom
wikipedia-en:Cloaca_(embryology)?oldid=1044532240&ns=0
dbo:wikiPageLength
3882
foaf:isPrimaryTopicOf
wikipedia-en:Cloaca_(embryology)