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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:vomeronasal organ
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Accession:UBERON:0002255 term browser browse the term
Definition:An organ thought to supplement the olfactory system in receiving pheromonic communication. The sensory part of the organ is in two long, thin sacs, situated on either side of the nasal septum at its base.
Comment:[homology-note] "(...) the vomeronasal organ is known only in some tetrapods. It is absent in most turtles, crocodiles, birds, some bats, and aquatic mammals. In amphibians, it is in a recessed area off the main nasal cavity. (...) In mammals possesing this organ, it is an isolated area of olfactory membrane within the nasal cavity that is usually connected to the mouth via the nasopalatine duct (reference 1); The opinions concerning the presence and functioning of the vomeronasal organ in humans are controversial. The vomeronasal cavities appear early in human foetuses. (...) Historical examination of the nasal septum revealed the presence of vomeronasal cavities in approximately 70% of adults. In contrast to the situation in other mammals, the organ is not supported by a rigid tube of bone or cartilage (reference 2); (...) the best evidence for the homology of the human VNO to that of other primates (and of mammals in general) is ontogenetic in nature, based on a common embryonic origin from a thickening (vomeronasal primordium) on the medial aspect of each olfactory pit (reference 3); (...) suggesting that lungfish possess a region homologous to the accessory olfactory bulb of tetrapods. Based on these results, it seems appropriate to refer to the recess epithelium as a primordium of the vomeronasal organ (reference 4). [debated][VHOG]" xsd:string {date_retrieved="2012-09-17", external_class="VHOG:0000665", ontology="VHOG", source="ISBN:978-0072528305 Kardong KV, Vertebrates: Comparative Anatomy, Function, Evolution (2006) p.669 (ref.1), http://www.ncbi.nlm.nih.gov/pubmed/9866877 Doving KB, Trotier D, Review: Structure and function of the vomeronasal organ. The Journal of Experimental Biology (1998) (ref.2), DOI:10.1046/j.1469-7580.2001.19810077.x Smith TD, Siegel MI, Bonar CJ, Bhatnagar KP, Mooney MP, Burrows AM, Smith MA, Maico LM, The existence of the vomeronasal organ in postnatal chimpanzees and evidence for its homology with that of humans. J Anat (2001) (ref.3) , DOI:10.1002/ar.22415 Nakamuta S, Nakamuta N, Taniguchi K, Taniguchi K, Histological and ultrastructural characteristics of the primordial vomeronasal organ in lungfish. Anat Rec (Hoboken) (2012) (ref.4)", source="http://bgee.unil.ch/"}; [taxon-note] "Generally formed only in tetrapods; lungfish have rudimentary VN organs; true VN organs are not normally found in recent fishes, birds, aquatic reptiles, aquatic mammals (Bertmar 1980). Humans: Its presence in many animals has been widely studied and the importance of the vomeronasal system to the role of reproduction and social behavior (through influence on anterior hypothalamus) has been shown in many studies. Its presence and functionality in humans was controversial, though most studies agree the organ regresses during fetal development. Many genes essential for VNO function in animals (such as TRPC2) are non-functional in humans (Liman ER. Use it or lose it: molecular evolution of sensory signaling in primates. Pflugers Arch. 2006;453(2):125-31.)"
Synonyms:exact_synonym: Jacobson's organ;   organon vomeronasale
 related_synonym: VNO;   organ of Jacobsen;   organum vomeronasale
 xref: AAO:0000997;   BTO:0002608;   EFO:0001934;   EHDAA2:0002211;   EHDAA:7865;   EMAPA:17612;   FMA:77280;   GAID:354;   MA:0000289;   MESH:D019147;   SCTID:361346007;   VHOG:0000665;   Wikipedia:Vomeronasal_organ;   XAO:0000272;   neuronames:1566


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Path 1
Term Annotations click to browse term
  UBERON ontology 0
    anatomical entity 0
      material anatomical entity 0
        anatomical structure 0
          ectoderm-derived structure 0
            vomeronasal organ 0
              epithelium of vomeronasal organ 0
              mesenchyme of vomeronasal organ 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
                        ectoderm 0
                          ectoderm-derived structure 0
                            non-neural ectoderm 0
                              preplacodal ectoderm 0
                                neurogenic placode 0
                                  olfactory placode 0
                                    nose 0
                                      vomeronasal organ 0
                                        epithelium of vomeronasal organ 0
                                        mesenchyme of vomeronasal organ 0
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