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The Hearing Aid Advice Centre Ltd, Audiology House,
Oakwood Park, Livingston,
UK,
EH54 8AW
01506 420519
0800 169 68 62
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Organ of Corti |
Organ
of Corti |
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The main function of the cochlea is to
convert sound waves into nervous impulses. The organ of Corti, on the basilar
membrane, is the auditory transducer to convert mechanical to electrical
energy. The hair cells and their nerve endings are contained in the organ
of Corti. There are one row of inner hair cells and three to five (towards
the apex) rows of outer hair cells. Each ear contains about 15,000 hair
cells. The arch of the rods of Corti give the organ rigidity.
The organ of Corti is covered by a jelly-like and fibrous flap, the tectorial
membrane. The tectorial membrane is attached only on one side and as it
is raised above the basilar membrane, when the basilar membrane moves up
and down a shear movement will occur between the tectorial membrane and
the organ of Corti, with the result that the hairs will be bent, thus sending
the nerve impulses to the brain that allow us to hear..
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