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Module 10: Figure organ of Corti



The structural organization of the organ of Corti.

Four orderly rows of hair cells, located in the organ of Corti, run the whole length of the cochlea. There is a single row of inner hair cells and three rows of outer hair cells. When viewed from the surface, the stereocilia of the outer hair cells are arranged in a V-shape, with the tallest stereocilia at the apex. The tectorial membrane that lies over the surface of the hair cells makes contact with the stereocilia. These hair cells are connected to both afferent and efferent nerve fibres. Reproduced from Eckert, R. and Randall, D. (1983) Animal Physiology: Mechanisms and Adaptation, with permission from W.H. Freeman and Company; see Eckert and Randall 1983.