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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:placenta
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Accession:UBERON:0001987 term browser browse the term
Definition:Organ of metabolic interchange between fetus and mother, partly of embryonic origin and partly of maternal origin[GO]. The fetal portion of the placenta is known as the villous chorion. The maternal portion is known as the decidua basalis. The two portions are held together by anchoring villi that are anchored to the decidua basalis by the cytotrophoblastic shell.
Comment:Marsupials possess only a rudimentary yolk-type placenta, with reduced nutrient and oxygen exchanging capabilities.; [homology-note] "Phylogenetic analyses of the concatenated data set using maximum parsimony, maximum likelihood and distance based (neighbour joining) methods all converged on a nearly identical, well supported topology defining four principal eutherian lineages. The results affirm monophyly of traditional placental orders (except Artiodactyla and Insectivora), and also support some previously proposed, as well as new, superordinal clades.[well established][VHOG]" xsd:string {date_retrieved="2012-09-17", external_class="VHOG:0001266", ontology="VHOG", source="DOI:10.1038/35054550 Murphy WJ, Eizirik E, Johnson WE, Zhang YP, Ryder OA, O'Brien SJ, Molecular phylogenetics and the origins of placental mammals. Nature (2001)", source="http://bgee.unil.ch/"}; [taxon-note] "Eutherians: In eutherians, the chorioallantoic membrane of the fetus establishes intimate contact with the adjacent vascular wall of the mother's uterus to produce the placenta, a composite structure formed in part from tissues of the fetus and in part from tissues of the mother [ISBN:0073040584 (Vertebrates, Kardong)]. TODO - is taxon restriction too strict, even if we restrict def to allantoic placenta? - WP says: also found in some snakes and lizards with varying levels of development up to mammalian levels. Pough et al. 1992. Herpetology: Third Edition. Pearson Prentice Hall:Pearson Education, Inc., 2002. // See also: DOI:10.1002/jmor.11011"
Synonyms:exact_synonym: allantoic placenta;   eutherian placenta
 xref: BTO:0001078;   CALOHA:TS-0799;   EFO:0001407;   EMAPA:35689;   EV:0100119;   FMA:63934;   GAID:379;   MA:0000386;   MAT:0000279;   MESH:D010920;   MIAA:0000279;   NCI:C13272;   SCTID:181455002;   UMLS:C0032043;   VHOG:0001266;   Wikipedia:Placenta
 relational_adjective: placental
 external_ontology: present_in_taxon NCBITaxon:9606


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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
        anatomical structure 0
          mesoderm-derived structure 0
            placenta 0
              cotyledonary placenta 0
              decidua + 0
              diffuse placenta 0
              discoid placenta 0
              endotheliochorial placenta 0
              epitheliochorial placenta 0
              hemochorial placenta 0
              placenta blood vessel + 0
              placenta junctional zone 0
              placenta labyrinth + 0
              placental disc + 0
              placental membrane + 0
              placentome of cotyledonary placenta + 0
              spongiotrophoblast layer 0
              zonary placenta 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
                  embryonic tissue 0
                    germ layer / neural crest 0
                      germ layer 0
                        mesoderm 0
                          mesoderm-derived structure 0
                            lateral plate mesoderm 0
                              somatopleure 0
                                amniotic fold 0
                                  chorion membrane 0
                                    placenta 0
                                      cotyledonary placenta 0
                                      decidua + 0
                                      diffuse placenta 0
                                      discoid placenta 0
                                      endotheliochorial placenta 0
                                      epitheliochorial placenta 0
                                      hemochorial placenta 0
                                      placenta blood vessel + 0
                                      placenta junctional zone 0
                                      placenta labyrinth + 0
                                      placental disc + 0
                                      placental membrane + 0
                                      placentome of cotyledonary placenta + 0
                                      spongiotrophoblast layer 0
                                      zonary placenta 0
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