Cross Section Of Cochlea

The spiral canal of the cochlea is a section of the bony labyrinth of the inner ear that is approximately 30 mm long and makes 2 turns about the modiolus.
Cross section of cochlea. Permission is granted to copy distribute and or modify this document under the terms of the gnu free documentation license version 1 2 or any later version published by the free software foundation. Cross section of cochlea. The cochlea plural is cochleae is a spiraled hollow conical chamber of bone in which waves propagate from the base near the middle ear and the oval window to the apex the top or center of the spiral.
The reissner membrane stretches from the inner margin of the limbus to the upper border of the stria. A structure that runs the length of the cochlea in the inner ear and holds the auditory receptors called hair cells. Organ of corti organ of corti consists of a sensory epithelium with hair cells and supporting cells nerve fibres stria vascularis tectorial membrane.
A cross section through one of the turns of the cochlea inset showing the scala tympani and scala vestibuli which contain perilymph and the cochlear duct which is filled with endolymph. Cross sections of the cochlear duct from furness and hackney scott brown s otorhinolaryngology. Each coil of the cochlea has three chambers and three membranes.
Head and neck surgery 7. Separates the cochlear duct from the scala vestibuli. Cross section of a single cochlear turn the scala media filled with endolymph in green is surrounded by the reticular lamina which covers the organ of corti 1 by reissner s membrane 2 on the side of the scala vestibuli and by the lateral wall 3 composed of the stria vascularis and the cochlear promontory.
The upper chamber in the illustration is the scala vestibuli. Terminates at round window. The upper bony passage of the cochlea.
The vestibular membrane is the tissue that forms the bottom of the scala vestibuli. With no invariant sections no front cover texts and no back cover texts a copy of the license is included in the section entitled gnu free documentation license. A structure that runs the length of the cochlea in the inner e.