human_reference_atlas Homo sapiens organ part eye lamina of spiral limbus http://upload.wikimedia.org/wikipedia/commons/a/a5/Gray930.png MA:0001191 Wikipedia:Limbus_laminae_spiralis lamina of spiral limbus limbus laminae spiralis osseae The osseous spiral lamina consists of two plates of bone, and between these are the canals for the transmission of the filaments of the acoustic nerve. On the upper plate of that part of the lamina which is outside the vestibular membrane, the periosteum is thickened to form the limbus spiralis (or limbus laminæ spiralis), this ends externally in a concavity, the sulcus spiralis internus, which represents, on section, the form of the letter C. [WP,unvetted]. AS uberon limbus laminae spiralis FMA:77721 EMAPA:35496 spiral limbus lamina spiral limbus limbus lamina spiralis lamina of spiral limbus UBERON:0002276