otic capsule


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otic capsule

[′ōd·ik ′kap·səl]
(embryology)
A cartilaginous capsule surrounding the auditory vesicle during development, later fusing with the spheroid and occipital cartilages.
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References in periodicals archive ?
Cochlear otospongiosis occurs in the otic capsule surrounding the cochlea.
The horizontal portion of the facial nerve can be distinctly seen adjacent to the developing otic capsule.
For example, the exit for cranial nerve VII passes anterior to the otic capsule through a space (incisura pro otica) left by the growth upward and backward of the parachordals to form the acrochordal plate contacting the otic capsule.
Under this hypothesis, (1) Meckel's cartilage was solely responsible for the head and neck of the malleus, and the body and short process of the incus; (2) Reichert's cartilage was responsible for the handle of the malleus, the long process of the incus, the crura, and the lateral stapedial footplate; and (3) the otic capsule was responsible for the medial stapedial footplate.
In the early 1980s, nonossicular homograft otic capsule bone was used as a prosthetic material in stapedectomy.
3,6] One is a disruption of the otic capsule and membranous labyrinth by a temporal bone fracture.