The structure that overlies the spiral organ, and which is firmly attached to the walls of the cochlear duct, is the

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The structure that overlies the spiral organ is the tectorial membrane, which is firmly attached to the walls of the cochlear duct. The basilar membrane is located beneath the spiral organ and vibrates in response to sound waves. Endolymph is the fluid within the cochlear duct that bathes the hair cells of the spiral organ. The malleus is one of the three tiny bones in the middle ear that transmit vibrations from the eardrum to the inner ear. The vestibular duct is another name for the scala vestibuli, which is one of the three ducts within the cochlea.

The Structure That Overlies the Spiral Organ, and Which Is