tectorial membrane


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tectorial membrane

The thin, jelly-like membrane projecting from the vestibular lip of the osseous spiral lamina and overlying the spiral organ of Corti of the ear.
See also: membrane

tectorial membrane

A structure in the organ of Corti in the cochlea overlying the bristles of the acoustic hair cells on the basilar membrane. As particular cells vibrate under the influence of sound waves the bristles wipe against the tectorial membrane thus activating those hair cells to send nerve impulses to the brain.

tectorial membrane

a membrane, present in the COCHLEA of the inner ear, that runs parallel with the BASILAR MEMBRANE. Between the tectorial and basilar membranes, sensory cells span the gap and these cells are connected with nerve fibres which join the auditory nerve. The tectorial membrane forms part of the organ of Corti.

tectorial

pertaining to tectorium; of the nature of a roof or covering.

tectorial membrane
a gelatinous, fibrous, tongue-like structure resting on the tactile hairs in the spiral organ of the inner ear.
References in periodicals archive ?
MRI will best show typically high T1 methemoglobin extending distal to the mid-axis body, overlying the intact, uninjured tectorial membrane at the craniocervical junction.
Epidural hemorrhage, as seen in this group, will typically be constrained by an overlying attenuated tectorial membrane, partially stripped from the clivus and subjacent atlanto-axial junction.
Tectorial membrane injury is manifest by discontinuity of the normal T2 hypo-intense signal of the ligament, increase of the T2 signal intensity or if the intact membrane is elevated by a REH.
Only a few of these patients proceed to have MRI studies performed, where direct demonstration of tectorial membrane injury and REH is made possible.