Osseus spiral lamina
Osseus spiral lamina
Definition
The osseous spiral lamina is a bony shelf or ledge which projects from the modiolus into the interior of the canal, and, like the canal, takes two-and-three-quarter turns around the modiolus. It reaches about half-way toward the outer wall of the tube, and partially divides its cavity into two passages or scalae, of which the upper is named the scala vestibuli, while the lower is termed the scala tympani.
Also known as lamina modioli cochleae, lamina of modiolus cochleae, lamina of modiolus of cochlea, osseous spiral lamina, osseous spiral lamina of cochlea, spiral lamina of modiolus — per UBERON
The Osseus spiral lamina is a part of the Sensory (Ear).