Spiral limbus (magnified)

Limbus spiralis

Sensory (eye & ear)OrgansWhole body

View in 3D

What it is
The thickened connective-tissue shelf on the modiolar side of the cochlear duct, from whose lip the tectorial membrane hangs.
Function
Anchors the tectorial membrane over the hair cells.
Size
Real height about 50 micrometres.
Clinical note
Its interdental cells secrete the tectorial membrane during development.

Part of Organ of Corti (magnified section)

Nearby sensory (eye & ear) structures Basilar membrane (magnified), Cochlear nerve fibres (magnified), Inner hair cells (magnified), Outer hair cells (magnified), Pillar cells (magnified), Tectorial membrane (magnified)