Which of the following is a form of hearing impairment related to the inner ear?

• A. Conductive hearing loss
• B. Neoplasm
• C. Sensorineural loss
• D. Both conductive and sensorineural

Answer: (C)

Sensorineural loss is the form of hearing impairment that involves the inner ear. It occurs when the cochlea or the auditory nerve pathways are damaged, such as from aging, prolonged noise exposure, ototoxic medications, or certain diseases. This damage disrupts the transduction of sound into neural signals or their transmission to the brain, causing difficulty with understanding speech and often a loss of high-frequency sounds. Conductive loss, by contrast, comes from problems in the outer or middle ear that prevent sound from reaching the inner ear. A neoplasm is not a standard category of hearing loss, though tumors can affect hearing indirectly. When both inner and outer/middle ear issues are present, that’s a mixed loss, not a pure inner-ear form.