organ of Corti


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organ

 [or´gan]
accessory digestive o's (accessory o's of digestive system) organs and structures not part of the alimentary canal that aid in digestion; they include the teeth, salivary glands, liver, gallbladder, and pancreas.
organ of Corti the organ lying against the basilar membrane in the cochlear duct, containing special sensory receptors for hearing, and consisting of neuroepithelial hair cells and several types of supporting cells.
effector organ a muscle or gland that contracts or secretes, respectively, in direct response to nerve impulses.
enamel organ a process of epithelium forming a cap over a dental papilla and developing into the enamel.
end organ end-organ.
Golgi tendon organ any of the mechanoreceptors arranged in series with muscle in the tendons of mammalian muscles, being the receptor for stimuli responsible for the lengthening reaction.
sense o's (sensory o's) organs that receive stimuli that give rise to sensations, i.e., organs that translate certain forms of energy into nerve impulses that are perceived as special sensations.
spiral organ organ of Corti.
target organ the organ affected by a particular hormone.
vestigial organ an undeveloped organ that, in the embryo or in some remote ancestor, was well developed and functional.
o's of Zuckerkandl para-aortic bodies.

spi·ral or·gan

[TA]
a prominent ridge of highly specialized epithelium in the floor of the cochlear duct overlying the basilar membrane of cochlea, containing one inner row and three outer rows of hair cells, or cells of Corti (the auditory receptor cells innervated by the cochlear nerve) supported by various columnar cells: the pillars of Corti, cells of Hensen, and cells of Claudius; the spiral organ is partly overhung by an awninglike shelf, the tectorial membrane, the free marginal zone of which is covered by a gelatinous substance in which the stereocilia of the outer hair cells are embedded.

organ of Corti

(kôr′tē)
n.
A specialized structure located on the inner surface of the basilar membrane of the cochlea containing hair cells that transmit sound vibrations to the nerve fibers.

or·gan of Cor·ti

(ōr'găn kōr'tē)
Specialized hair cells that receive sound vibrations and transmit them as impulses to the brain; located on basilar membrane of inner ear in two rows that slope against each other.
[Alphonso Corti, 1822-1888, Italian anatomist]
Enlarge picture
ORGAN OF CORTI

organ of Corti

An elongated spiral structure running the entire length of the cochlea in the floor of the cochlear duct and resting on the basilar membrane. It contains the receptors for hearing, hair cells that are stimulated by sound waves.
Synonym: organum spirale; spiral organ See: illustration; Claudius' cell

organ of Corti

A spiral structure on the inner surface of the basilar membrane of the COCHLEA that contains a large series of sensory receptors that respond to sound vibrations of different frequencies and stimulate appropriate nerve impulses subserving hearing. (Marquis Alfonso Corti, 1822–88, Italian anatomist).

organ of Corti

see COCHLEA.
References in periodicals archive ?
In histopathological examination, it was seen that histopathological changes detected in organ of corti, spiral ganglion cells, and stria vascularis in the negative control group were similar to those detected in the study group.
(a) Prestin protein expression is increased in the apical organ of Corti after low-frequency sound environment stimulation.
The explants and cells growing in the tissue regions formerly associated with the organ of Corti were isolated by lifting them with a micropipette after a 2- to 5-min incubation with trypsin-EDTA.
The optical method [17] does not provide enough mechanical vibration until the light is strong enough to cause damage to the organ of Corti. The mechanical stimulation in Richter et al.
After removal of the bone and stria vascularis, the sensory epithelium (organ of Corti) was collected using a sharpened needle and further dissociated with trypsin (0.5 mg/ml) for 2-3 min with shaking.
To accomplish this, we dissected the organ of Corti (OC) from newborn Sprague-Dawley rats and cultured the OCs in medium overnight for recovery.
Computer-aided three-dimensional reconstruction in human cochlear maps: measurement of the lengths of organ of Corti, outer wall, inner wall, and Rosenthal's canal.
In P0-P14 mouse cochleae, IBA1+ cells were mainly observed in the modiolus, spiral lamina, spiral ganglion, spiral ligament, and the organ of Corti (Figure 1).
For example, 700 genes determine the structure and function of the organ of Corti alone.
CDDP causes damage to the organ of corti in the cochlea, resulting hearing loss, which can lead to social development deficiencies, such as learning problems, in children.
A recent study demonstrated that Sox2, a member of the SoxB1 group along with Sox1 and Sox3, is required for the development of sensory epithelia, including the organ of Corti [14-17].
(5) Their temporal bone studies showed that cochlear changes ranged from a mild loss of outer hair cells in patients who had undergone relatively few hemodialysis treatments and transplants to a complete absence of the organ of Corti in patients who underwent more than 250 hemodialysis treatments and multiple transplants.