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Human Body & Health

Why does intense, prolonged exposure to jet engine noise potentially lead to permanent hearing loss?

A)Cochlear hair cells regenerate excessively
B)Stereocilia experience excessive mechanical stress
C)Tectorial membrane stiffens due to overload
D)Auditory nerve fibers become hyperpolarized

💡 Explanation

Prolonged exposure to intense noise causes permanent hearing loss because stereocilia, the hair-like structures in the inner ear, undergo excessive mechanical stress and damage, leading to their eventual destruction. Therefore, hearing is impaired due to hair cell damage rather than nerve damage or over-compensation.

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