loading...| Preferred Name |
cochlea |
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| Synonyms |
cochlear part of bony labyrinth lagena cochlear organ cochlear duct cochleae lagenas |
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| Definitions |
The spiral-shaped bony canal in the inner ear containing the hair cells that transduce sound. Its core component is the Organ of Corti, the sensory organ of hearing, which is distributed along the partition separating fluid chambers in the coiled tapered tube of the cochlea. [WP,modified]. |
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| ID |
http://purl.obolibrary.org/obo/UBERON_0001844 |
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| database_cross_reference |
BIRNLEX:1190 VHOG:0000691 AAO:0000253 NCIT:C12395 UMLS:C1278895 XAO:0000197 ZFA:0000374 TAO:0000374 EFO:0000357 MESH:D003051 MAT:0000144 Wikipedia:Cochlea BTO:0000267 CALOHA:TS-0151 UMLS:C0009195 EMAPA:17597 MIAA:0000144 NIFSTD_RETIRED:birnlex_883 SCTID:181187008 EV:0100363 FMA:60201 GAID:724 MA:0000240 |
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| definition |
The spiral-shaped bony canal in the inner ear containing the hair cells that transduce sound. Its core component is the Organ of Corti, the sensory organ of hearing, which is distributed along the partition separating fluid chambers in the coiled tapered tube of the cochlea. [WP,modified]. |
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| depiction |
http://upload.wikimedia.org/wikipedia/commons/c/c7/Cochlea-crosssection.png http://upload.wikimedia.org/wikipedia/commons/c/cb/Cochlea-crosssection.svg |
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| external_definition |
A spiral-shaped cavity in the petrous portion of the temporal bone of the inner ear, containing the nerve endings essential for hearing and forming one of the divisions of the labyrinth. [TFD][VHOG] |
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| external_ontology_notes |
sources vary in connection to bony labyrinth |
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| has_exact_synonym |
cochlear part of bony labyrinth lagena |
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| has_obo_namespace |
uberon |
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| has_related_synonym |
cochlear organ cochlear duct cochleae lagenas |
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| has_relational_adjective |
cochlear |
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| homology_notes |
Because achieving high sensitivity is generally advantageous for auditory organs, it is not surprising that evidence for cochlear amplification is also seen in nonmammals. Spontaneous otoacoustic emissions (SOAEs) are narrow-band sound signals emitted from the inner ear, and it is generally assumed that their energy derives from the hair-cell molecular motors underlying cochlear amplification. However, all terrestrial vertebrates studied so far (including amphibians) show very similar SOAEs. The most parsimonious explanation for the universality of this phenomena is that some kind of amplifying mechanism is at least as old as land vertebrates themselves.[well established][VHOG] |
|
| id |
UBERON:0001844 |
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| in_subset |
http://purl.obolibrary.org/obo/uberon/core#efo_slim http://purl.obolibrary.org/obo/uberon/core#vertebrate_core |
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| label |
cochlea |
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| notation |
UBERON:0001844 |
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| part_of | ||
| prefLabel |
cochlea |
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| taxon_notes |
The association with 'lagena' in frog and fish comes from HOG, although HOG is inconsistent here, associating lagena with XAO cochlea and ZFA cochlear duct. NBK53175 says: 'In contrast, the ventrally located auditory chambers have undergone more extensive evolutionary modifications. The saccule and lagena are prominent auditory organs in fish but the saccule has a vestibular role in mammals and birds, and the lagena is absent in mammals. The primary au- ditory organ in mammals and birds is the cochlea, which has no known counterpart in amphibians and fish (Riley and Phillips, 2003)' the cochlea is coiled in most mammals, monotremes being the exceptions. |
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| treeView | ||
| subClassOf |