Sulcus spiralis internus

Sulcus spiralis internus
Floor of ductus cochlearis.
Details
Identifiers
LatinSulcus spiralis internus
TA98A15.3.03.123
FMA77850 77850, 77850
Anatomical terminology

On the upper plate of that part of the lamina which is outside the vestibular membrane, the periosteum is thickened to form the spiral limbus, this ends externally in a concavity, the sulcus spiralis internus, which represents, on section, the form of the letter C.

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