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CROSS-SPECIES ANATOMY - ANNOTATIONS

The Basic subset of the UBERON integrated, cross-species anatomy ontology is downloaded weekly from http://berkeleybop.org/ontologies/uberon/basic.obo. For more information about this ontology see the "About" page on the UBERON website at http://uberon.github.io/about.html.
Term:primitive urogenital sinus
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Accession:UBERON:0000164 term browser browse the term
Definition:The ventral part of the cloaca remaining after septation of the rectum, which further develops into part of the bladder, part of the prostatic part of the male urethra and the urethra and vestibule in females.
Comment:[homology-note] "In mammals the lowly monotremes still have a cloaca. Higher types have done away with this structure and have a separate anal outlet for the rectum. The monotreme cloaca shows the initiation of this subdivision. The cloaca has such includes only the distal part, roughly comparable to the proctodeum. The more proximal part is divided into (1) a large dorsal passage into which the intestine opens, the coprodeum, and (2) a ventral portion, the urodeum with which the bladder connects. (...) the development of the placental mammals recapitulates in many respects the phylogenetic story. In the sexually indifferent stage of placental mammal there is a cloaca. While the indifferent stage still persists, a septum develops, and extends out to the closing membrane. This divides the cloaca into two chambers: a coprodeum continuous with the gut above, and a urodeum or urogenital sinus below.[well established][VHOG]" xsd:string {date_retrieved="2012-09-17", external_class="VHOG:0000414", ontology="VHOG", source="ISBN:978-0721676678 Romer AS, Vertebrate body (1970)p.388-89 and Figure 300", source="http://bgee.unil.ch/"}; [terminology-note] "the term 'urogenital sinus' may refer to the primitive urogenital sinus present as a transient developmental structure in most mammals or it may refer to a condition in which an unseptated cloaca persists in animals longer than normal" xsd:string {source="MP"}
Synonyms:exact_synonym: UGS;   fetal UGS;   sinus urogenitalis
 broad_synonym: urogenital sinus
 xref: EHDAA2:0004060;   EHDAA:5029;   EHDAA:5919;   EMAPA:17379;   NCI:C34322;   SCTID:50961009;   UMLS:C0231057;   VHOG:0000414;   Wikipedia:Definitive_urogenital_sinus


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Term paths to the root
Path 1
Term Annotations click to browse term
  UBERON ontology 0
    anatomical entity 0
      material anatomical entity 0
        developing anatomical structure 0
          embryonic structure 0
            primitive urogenital sinus 0
              Mullerian tubercle 0
              major vestibular gland + 0
              sinovaginal bulb + 0
              urethra + 0
              urinary bladder + 0
              urogenital sinus epithelium + 0
              urogenital sinus lumen + 0
              vagina + 0
              vaginal plate 0
Path 2
Term Annotations click to browse term
  UBERON ontology 0
    anatomical entity 0
      material anatomical entity 0
        anatomical structure 0
          multicellular anatomical structure 0
            multicellular organism 0
              embryo 0
                embryonic structure 0
                  presumptive structure 0
                    presumptive gut 0
                      digestive tract 0
                        cloaca 0
                          embryonic cloaca 0
                            primitive urogenital sinus 0
                              Mullerian tubercle 0
                              major vestibular gland + 0
                              sinovaginal bulb + 0
                              urethra + 0
                              urinary bladder + 0
                              urogenital sinus epithelium + 0
                              urogenital sinus lumen + 0
                              vagina + 0
                              vaginal plate 0
paths to the root