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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:tympanic membrane
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Accession:UBERON:0002364 term browser browse the term
Definition:A thin membrane that separates the external ear from the middle ear, consisting of two epithelia (one part of the the external accoustic meatus epithelium, the other part of the tympanic cavity epithelium) with a fibrous layer between them. Its function is to transmit sound from the air to the ossicles inside the middle ear. The malleus bone bridges the gap between the eardrum and the other ossicles. Rupture or perforation of the eardrum can lead to conductive hearing loss. [WP,unvetted].
Comment:[development-note] "The tympanic membrane (TM) has three layers, two epithelia provided by the external acoustic meatus (EAM) and the MEC, derived respectively from the first pharyngeal cleft and pouch, and a mesenchymally derived fibrous stratum"; [homology-note] "In particular, a tympanic membrane was not present in the earliest tetrapods (...). An ear utilizing a tympanic membrane evolved independently at least three times in tetrapods: (1) in the lineage that leads to anurans (frogs), (2) in the line of evolution to turtles and diapsids, and (3) in the late synapsid lineage that gave rise to mammals.[well established][VHOG]" xsd:string {date_retrieved="2012-09-17", external_class="VHOG:0001146", ontology="VHOG", source="ISBN:978-0030223693 Liem KF, Bemis WE, Walker WF, Grande L, Functional Anatomy of the Vertebrates: An Evolutionary Perspective (2001) p.418", source="http://bgee.unil.ch/"}
Synonyms:exact_synonym: Rivinus' membrane;   ear drum;   eardrum;   lateral wall of tympanic cavity;   membranous wall of tympanic cavity;   myrinx;   paries membranaceus cavi tympani
 related_synonym: tympanum
 xref: EMAPA:19062;   FMA:9595;   GAID:870;   MA:0000257;   MESH:D014432;   NCI:C12502;   SCTID:181180005;   UMLS:C0041445;   VHOG:0001146;   Wikipedia:Tympanic_membrane;   XAO:0000212
 external_ontology: never_in_taxon NCBITaxon:8459



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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
          anatomical system 0
            organ 0
              membrane organ 0
                tympanic membrane 0
                  layer of tympanic membrane + 0
                  pars flaccida of tympanic membrane 0
                  pars tensa of tympanic membrane 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
                        subdivision of digestive tract 0
                          foregut 0
                            pharyngeal region of foregut 0
                              pharyngeal arch system 0
                                pharyngeal arch 0
                                  pharyngeal membrane 0
                                    pharyngeal membrane of 1st arch 0
                                      tympanic membrane 0
                                        layer of tympanic membrane + 0
                                        pars flaccida of tympanic membrane 0
                                        pars tensa of tympanic membrane 0
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