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For one, the tall hair cell is very similar in function to that of the inner hair cell, and the short hair cell, lacking afferent auditory-nerve fiber innervation, resembles the outer hair cell. One unavoidable difference, however, is that while all hair cells are attached to a tectorial membrane in birds, only the outer hair cells are attached ...
The organ of Corti is located in the scala media of the cochlea of the inner ear between the vestibular duct and the tympanic duct and is composed of mechanosensory cells, known as hair cells. [2] Strategically positioned on the basilar membrane of the organ of Corti are three rows of outer hair cells (OHCs) and one row of inner hair cells ...
The cell cycle inhibitor p27kip1 has also been found to encourage regrowth of cochlear hair cells in mice following genetic deletion or knock down with siRNA targeting p27. [36] [37] Research on hair cell regeneration may bring us closer to clinical treatment for human hearing loss caused by hair cell damage or death.
The endolymph is the fluid that surrounds the apical surfaces of hair cells. Potassium is the major cation in the endolymph and is thought to be responsible for carrying the receptor currents in the cochlea. Perilymph is found surrounding the sides and the bases of the hair cells.
Hair cells and supporting cells are both located in the cochlea inside the inner ear. [1] [2] In mammals, hair cells are located in the Organ of Corti and convert energy from sound waves and physical movement into electrical signals. [2] This is accomplished through integrating neurons with hair cells that transmit signals to the auditory nerve ...
Tonotopic position determines the structure of hair bundles in the cochlea. [14] The height of hair bundles increases from base to apex and the number of stereocilia decreases (i.e. hair cells located at the base of the cochlea contain more stereo cilia than those located at the apex). [14] Furthermore, in the tip-link complex of cochlear hair ...
The spiral (cochlear) ganglion is a group of neuron cell bodies in the modiolus, the conical central axis of the cochlea. These bipolar neurons innervate the hair cells of the organ of Corti . They project their axons to the ventral and dorsal cochlear nuclei as the cochlear nerve , a branch of the vestibulocochlear nerve (CN VIII).
Hensen's cells are important in ion metabolism and homeostasis regulation of both endolymph and perilymph, modulation of the hearing sensitivity, regulation and regeneration of the hair cells, and prevention of the cochlea damage. [6] The outer hair cells of the cochlea preprocess the signal by active movements, which can be elevated by ...