Preferred Label : cochlea;
Uberon 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].;
Uberon synonym : lagena; cochlear part of bony labyrinth;
Uberon related term : cochleae; lagenas; cochlear duct; cochlear organ;
Uberon Homology note : 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];
Uberon Taxon note : 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)';
Origin ID : 0001844;
Automatic exact mappings (from CISMeF team)
- Uberon cross reference
- contributes to morphology of
- has part
- innervated by
- location of
- part of
- surrounded by
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].
