Sound waves enter through the outer ear, move into the middle ear, and finally reach the inner ear and its intricate network of nerves, bones, canals, and cells. Hair cells inside the organ of Corti detect sound and send the information through the cochlear nerve. Inside the cochlear duct is the main hearing organ, the spiral shaped organ of Corti. ![]() The snail-like cochlea is made up of three fluid-filled chambers that spiral around a bony core, which contains a central channel called the cochlear duct. The cochlea, the hearing organ, is located inside the inner ear. There are two main sections within the inner ear: the bony labyrinth and the membranous labyrinth. The inner ear is called the labyrinth because of its complex shape. A bony casing houses a complex system of membranous cells.
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