Which of the following instruments is used to test hearing by air and bone conduction?

Rationale

Tuning fork

A tuning fork is specifically designed to assess hearing through both air and bone conduction, making it an essential tool in audiometric evaluations. By generating a pure tone, it provides a reliable method for testing how sound is transmitted through the air and directly through the bones of the skull.

A (Tuning fork) CORRECT

The tuning fork produces a specific frequency sound that can be used to determine the type of hearing loss a patient may have. It facilitates tests such as Rinne and Weber tests, which differentiate between air conduction and bone conduction hearing.

B (Otoscope) YOUR ANSWER

An otoscope is primarily used to examine the external ear canal and the tympanic membrane (eardrum). While it helps identify conditions affecting hearing, such as earwax build-up or infections, it does not measure hearing ability through air or bone conduction directly.

C (Slit lamp) YOUR ANSWER

A slit lamp is an instrument used mainly in ophthalmology to examine the eye's anterior segment, including the cornea, iris, and lens. It has no application in testing hearing and does not assess auditory function in any capacity.

D (Wood's lamp) YOUR ANSWER

A Wood's lamp is utilized in dermatology to diagnose skin conditions by illuminating certain areas with ultraviolet light. It is not related to hearing assessments and cannot evaluate auditory capabilities.

Conclusion

The tuning fork is the only instrument listed that serves the purpose of testing hearing by air and bone conduction. Other options, such as the otoscope, slit lamp, and Wood's lamp, are designated for different medical evaluations and do not measure auditory function. Understanding the specific uses of these instruments is crucial for effective diagnosis and treatment in audiology.

Which of the following instruments is used to test hearing by air and bone conduction?

Tuning fork

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