Membrane {Reissner's membrane} separates middle canal and vestibular canal.
In cochlear canal, a coil {basilar membrane} also separates middle canal and tympanic canal. Close to oval window {base, basilar membrane}, basilar membrane is stiff and narrow. At other end {apex, basilar membrane}, basilar membrane is wider and less stiff.
Basilar-membrane structures {organ of Corti} have 30,000 hair-cell receptors, with stereocilia and fibers. Organ-of-Corti base detects high frequencies, and organ-of-Corti apex detects low frequencies (place code).
Gel membrane {tectorial membrane} attaches to end of, and floats in, middle canal and touches outer hair cells.
Basilar membrane, tectorial membrane, and organ of Corti together {cochlear partition} detect sounds. Cochlear partition is in middle canal.
1-Consciousness-Sense-Hearing-Anatomy-Cochlea
Outline of Knowledge Database Home Page
Description of Outline of Knowledge Database
Date Modified: 2022.0225