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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:otolith organ
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Accession:UBERON:0002518 term browser browse the term
Definition:The crystalline particles composed of calcium carbonate and a protein which adhere to the gelatinous membrane of the maculae of the utricle and saccule (otolithic membrane).
Comment:[homology-note] "In fishes, as in other vertebrates, the vestibular end-organs are divided into a gravity receptor system, with three subdivisions and an angular acceleration receptor system. The gravity receptor system on each side consists of utricular, saccular, and lagenar maculae, each covered by an otolith (reference 1); (...)considerations have led to our rethinking issues related to the origin of several aspects of vertebrate hearing, and to the view that many basic auditory functions evolved very early in vertebrate history, and that the functions observed in more `advanced' vertebrates, such as birds and mammals, are frequently modifications of themes first encountered in fishes, and perhaps even more ancestral animals (reference 2).[well established][VHOG]" xsd:string {date_retrieved="2012-09-17", external_class="VHOG:0001676", ontology="VHOG", source="PMID:11581521 Moorman SJ, Development of sensory systems in zebrafish (Danio rerio). ILAR Journal (2001), DOI:10.1016/S0378-5955(00)00168-4 Fay RR, Popper AN, Evolution of hearing in vertebrates: the inner ears and processing. Hearing research (2000)", source="http://bgee.unil.ch/"}
Synonyms:related_synonym: otolith organs;   saccule and utricle
 xref: EFO:0003539;   GAID:883;   MA:0002841;   MESH:D012444;   TAO:0000559;   VHOG:0001676;   Wikipedia:Otolith_organ;   ZFA:0000559


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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
          ectoderm-derived structure 0
            otolith organ 0
              anterior macula 0
              macula lagena 0
              macula neglecta 0
              saccule of membranous labyrinth + 0
              utricle of membranous labyrinth + 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
                                  dorsolateral placode 0
                                    otic placode 0
                                      otic pit 0
                                        ear vesicle 0
                                          internal ear 0
                                            membranous labyrinth 0
                                              vestibular labyrinth 0
                                                otolith organ 0
                                                  anterior macula 0
                                                  macula lagena 0
                                                  macula neglecta 0
                                                  saccule of membranous labyrinth + 0
                                                  utricle of membranous labyrinth + 0
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