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Human Body & Health

Why does sensorineural hearing loss often exhibit frequency-dependent sensitivity?

A)Auditory nerves uniformly degrade over time
B)Cochlear hair cells are tonotopically organized
C)Eustachian tube dysfunction affects all frequencies
D)Ossicular chain stiffening is frequency-independent

💡 Explanation

Sensorineural hearing loss displays frequency-dependent sensitivity because the cochlea's hair cells are arranged tonotopically; high-frequency sounds are processed at the base, and low-frequency sounds at the apex. Therefore, damage to specific regions affects particular frequency ranges, rather than an even loss, because the location of the damaged cells dictates the affected frequencies.

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