tympanic lamella (of osseous spiral lamina)
Definition: 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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