The middle fluid filled tunnel of the cochlea which houses the organ of Corti.

Fluid-filled region of the cochlea, containing the organ of Corti.

G. " + L. medius = middle; spiral of middle cochlear duct lying between scala vestibuli and scala tympani, containing endolymph.

Also called the cochlear duct, this region between the upper and lower chambers of the cochlea contains the organ of Corti.

See cochlear duct.