vestibular lamella (of osseous spiral lamina)
the thicker of two plates of bone, incompletely separated from each other by canals for peripheral fibers from the spiral (cochlear) ganglion, that together comprise the osseous spiral lamina; this plate lies on the side of the scala vestibuli; a thickening of the periosteum, the spiral limbus, is attached to the vestibular lamella within the cochlear duct.
Synonym(s): lamella vestibularis (laminae spiralis ossei)TA
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