Which functions of the inner ear can be assessed clinically?

Which functions of the inner ear can be assessed clinically?

• A. Only hearing
• B. Only equilibrium
• C. Equilibrium and hearing
• D. Smell and taste

Answer: (C)

The inner ear handles two main functions that clinicians can assess: hearing and balance. The cochlea converts sound vibrations into neural signals, so hearing can be evaluated with tests like pure-tone and speech audiometry, which measure how well those signals are detected and understood. The vestibular apparatus in the inner ear maintains balance and helps with spatial orientation, so equilibrium can be assessed through clinical observations of gait and coordination, as well as specialized tests such as the head impulse test or caloric testing that probe the vestibulo-ocular response. Smell and taste involve entirely different sensory systems, not the inner ear, so they aren’t part of inner-ear assessment. Thus, equilibrium and hearing are the functions of the inner ear that can be assessed clinically.

The inner ear handles two main functions that clinicians can assess: hearing and balance. The cochlea converts sound vibrations into neural signals, so hearing can be evaluated with tests like pure-tone and speech audiometry, which measure how well those signals are detected and understood. The vestibular apparatus in the inner ear maintains balance and helps with spatial orientation, so equilibrium can be assessed through clinical observations of gait and coordination, as well as specialized tests such as the head impulse test or caloric testing that probe the vestibulo-ocular response. Smell and taste involve entirely different sensory systems, not the inner ear, so they aren’t part of inner-ear assessment. Thus, equilibrium and hearing are the functions of the inner ear that can be assessed clinically.