Beginning in the fifth week of development, the auditory vesicle also gives rise to the cochlear duct, which contains the spiral organ of Corti and the endolymph that accumulates in the membranous labyrinth. (wikipedia.org)
The vestibular wall will separate the cochlear duct from the perilymphatic scala vestibuli, a cavity inside the cochlea. (wikipedia.org)
The basilar membrane separates the cochlear duct from the scala tympani, a cavity within the cochlear labyrinth. (wikipedia.org)
The lateral wall of the cochlear duct is formed by the spiral ligament and the stria vascularis, which produces the endolymph. (wikipedia.org)
The hair cells develop from the lateral and medial ridges of the cochlear duct, which together with the tectorial membrane make up the organ of Corti. (wikipedia.org)
The cochlea is a bony, spiral-shaped chamber that contains the cochlear duct of the membranous labyrinth. (medscape.com)
The sense of hearing is provided by receptors within the cochlear duct. (medscape.com)
CONCLUSION: Increases in endolymphatic pressure may cause a primary swelling of the apical cochlear duct and saccule, both of which have relatively thin membranes. (bvsalud.org)
Canals6
The three major parts of the bony labyrinth are the vestibule of the ear, the semicircular canals, and the cochlea. (wikipedia.org)
The vestibular system is the region of the inner ear where the semicircular canals converge, close to the cochlea. (wikipedia.org)
The bony labyrinth can be subdivided into the vestibule, 3 semicircular canals, and the cochlea. (medscape.com)
The fluid filled chambers within the vestibule are generally continuous with those of the semicircular canals. (medscape.com)
The osseous semicircular canals (Figs. 716, 717), three in number, are situated above and behind the vestibule. (co.ma)
Vestibule1
The vestibule contains a pair of membranous sacs: the saccule (sacculus) and the utricle (utriculus). (medscape.com)
Linear acceleration1
They contain the sensory hair cells and otoliths of the macula of utricle and of the saccule, respectively, which respond to linear acceleration and the force of gravity. (wikipedia.org)
Endolymphatic2
The utricular division of the auditory vesicle also responds to angular acceleration, as well as the endolymphatic sac and duct that connect the saccule and utricle. (wikipedia.org)
OBJECTIVES: Our aim in this study was to characterize the morphology of the endolymphatic compartment on histopathology in individuals with Ménière's disease (MD) and to determine why hydrops of the saccule is more pronounced than that of other compartments of the inner ear in MD. METHODS: Temporal bones from 9 patients with idiopathic MD and from 10 individuals without MD/endolymphatic hydrops were examined. (bvsalud.org)
Lateral4
In wild-type inner ears, Otx1 , but not Otx2 , was expressed in the lateral canal and ampulla, as well as part of the utricle. (biologists.com)
Paint-filled membranous labyrinths of Otx1 −/ − mutants showed an absence of the lateral semicircular canal, lateral ampulla, utriculosaccular duct and cochleosaccular duct, and a poorly defined hook (the proximal part) of the cochlea. (biologists.com)
In ears without MD, the Reissner's membrane and the membranous wall of the saccule were thinner than that of the utricle and of the lateral semicircular canal ( p (bvsalud.org)
The lateral semicircular canal did not show signs of hydrops. (bvsalud.org)
Perilymphatic1
Hydrops in the utricle may occur less frequently because of a thicker wall, because of a functioning UEV, and when the saccule has already occupied most of the vestibular perilymphatic space. (bvsalud.org)
Canal5
The type of motion or attitude detected by a hair cell depends on its associated mechanical structures, such as the curved tube of a semicircular canal or the calcium carbonate crystals (otolith) of the saccule and utricle. (wikipedia.org)
The superior semicircular canal, 15 to 20 mm. in length, is vertical and placed transversely to the long axis of the petrous part of the temporal bone. (co.ma)
The posterior semicircular canal is the longest and measures from 18 to 22 mm. (co.ma)
Benign paroxysmal positional vertigo of the horizontal semicircular canal may present a differential diagnostic challenge. (bvsalud.org)
We report a case with cupulolithiasis of the horizontal semicircular canal presenting with horizontal PSN in a sitting position, with implications for a new pathomechanism of PSN. (bvsalud.org)
Addition1
In addition, the maculae of the utricle and saccule were partially fused. (biologists.com)
Macula4
They contain the sensory hair cells and otoliths of the macula of utricle and of the saccule, respectively, which respond to linear acceleration and the force of gravity. (wikipedia.org)
Our data showed that BMP4 was an early marker for the superior, lateral, and posterior cristae, whereas Fng served as an early marker for the macula utriculi, macula sacculi, and the sensory portion of the cochlea. (nih.gov)
The posterior crista was the first organ to appear at 11.5 dpc and was followed by the superior crista, the lateral crista, and the macula utriculi at 12 dpc. (nih.gov)
The macula sacculi and the cochlea were present at 12 dpc but became distinguishable from each other by 13 dpc. (nih.gov)
Posterior1
The posterior semicircular canal is the longest and measures from 18 to 22 mm. (co.ma)
Membranous1
In ears without MD, the Reissner's membrane and the membranous wall of the saccule were thinner than that of the utricle and of the lateral semicircular canal ( p (bvsalud.org)
Present1
Benign paroxysmal positional vertigo of the horizontal semicircular canal may present a differential diagnostic challenge. (bvsalud.org)
Superior1
The superior semicircular canal, 15 to 20 mm. in length, is vertical and placed transversely to the long axis of the petrous part of the temporal bone. (co.ma)