tympanic lamella (of osseous spiral lamina)
the thinner of two plates of bone, incompletely separated from each other by canals for peripheral fibers from the spiral (cochlear) ganglion, which together comprise the osseous spiral lamina; this plate lies on the side of the scala tympani, forming a portion of its wall.
Synonym(s): lamella tympanica (laminae spiralis ossei)TA
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