Which of the following phenomena most likely accounts for the progressive loss of hearing that an 83-year-old man is experiencing?
A) Multiple changes in the structures of the inner ear.
B) The effect of cognitive changes on the interpretation of auditory stimuli.
C) Cellular atrophy of the cells in the outer and middle ear.
D) Age-related deterioration of the neural pathways associated with hearing acuity.
A
Feedback:
Presbycusis is progressive hearing loss that occurs as a result of age-related changes to the inner ear, including loss of hair cells, decreased blood supply, reduced flexibility of basilar membrane, degeneration of spiral ganglion cells, and reduced production of endolymph. Cognitive changes, cellular changes in the outer and middle ear, and deterioration of neural pathways are less likely to be implicated.
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