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osseous spiral lamina


Definition: a double plate of bone winding spirally around the modiolus, dividing the spiral canal of the cochlea incompletely into two regions, the scala tympani and scala vestibuli; between the two plates of this lamina, the fibers of the cochlear nerve reach the spiral organ (of Corti).

Synonym(s): lamina spiralis osseaTA, spiral plate

Further information

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.