NURSING EXAM QUESTIONS
MEDICAL SURGICAL NURSING
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Middle ear-amplifies sound waves
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Hair cells-present on basilar membrane
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Saccule and utricle-maintain static equilibrium
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Cristae-perform hearing function
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Detailed explanation-1: -Ears are responsible for sound perception and maintaining body balance. Ears consist of three main parts; the outer ear, middle ear and inner ear. Cochlea present in the inner ear are auditory organs and contain auditory receptors. Vestibular apparatus maintains the body equilibrium.
Detailed explanation-2: -So, the correct answer is ‘Nerve impulses are generated and transmitted by efferent fibres to the auditory cortex of brain’.
Detailed explanation-3: -Your ears have two main functions: hearing and balance. Hearing: When sound waves enter your ear canal, your tympanic membrane (eardrum) vibrates. This vibration passes on to three tiny bones (ossicles) in your middle ear. The ossicles amplify and transmit these sound waves to your inner ear.
Detailed explanation-4: -Solution : The crista and macula are the specific receptors of the vestibular apparantus responsible for maintenance of balance of the body and posture. These play no role in hearing.