The cochlear duct is bounded on three sides by the basilar membrane, the stria vascularis, and Reissner's membrane.
12.
Another craniofacial related deformity due to the absence of noggin is conductive hearing loss caused by uncontrolled outgrowth of the cochlear duct and coiling.
13.
The fluid found in these two cochlear chambers is perilymph, while scala media, or the cochlear duct, is filled with endolymph.
14.
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.
15.
A set of membranes called the vestibular membrane and the basilar membrane develop to separate the cochlear duct from the vestibular duct and the tympanic duct, respectively.
16.
Vestibular and tympanic ducts are filled with perilymph, and the smaller cochlear duct between them is filled with endolymph, a fluid with a very different ion concentrations and voltage.
17.
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.
18.
As a result of this increase in length, the basilar membrane and papilla are both extended, with the latter developing into the organ of Corti, while the lagena is now called the cochlear duct.
19.
PCP-2 is expressed in non-neural tissues during development, including the first forming somite in chick, known as S2, the lens fiber cells of the eye, in the esophagus, scleretome, kidneys, lungs, enamel organs ( early incisor and molar teeth ), and the cochlear ducts of the inner ear.
