Which of the following correctly describes the process of hearing?
Vibration of the eardrum is directly transmitted to the eighth cranial nerve, bypassing the inner ear structures.
Sound waves enter the ear canal and are converted to electrical impulses.
Vibration of the eardrum transmits through the bony ossicles to the perilymph in the inner ear, stimulating the eighth cranial nerve.
Sound is transmitted directly from the eardrum to the brain.
The Correct Answer is C
Choice A rationale
Vibration of the eardrum is not directly transmitted to the eighth cranial nerve, bypassing the inner ear structures. The vibrations from the eardrum are first transmitted through the ossicles (tiny bones in the middle ear) to the cochlea in the inner ear.
Choice B rationale
Sound waves enter the ear canal, but they are not directly converted to electrical impulses. The sound waves cause the eardrum to vibrate, and these vibrations are transmitted through the ossicles to the cochlea, where they are converted into electrical signals that are sent to the brain via the eighth cranial nerve.
Choice C rationale
Vibration of the eardrum transmits through the bony ossicles to the perilymph in the inner ear, stimulating the eighth cranial nerve. This is the correct description of the process of hearing.
Choice D rationale
Sound is not transmitted directly from the eardrum to the brain. The sound-induced vibrations of the eardrum are transmitted through the ossicles to the cochlea, where they are converted into electrical signals that are sent to the brain via the eighth cranial nerve.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A rationale
Chilling the irrigant prior to the procedure is not recommended. Cold irrigant can cause discomfort and potentially lead to vasoconstriction, which can impede the healing process.
Choice B rationale
Irrigating the wound until the solution that is draining is clean is a standard practice in wound care. This helps to ensure that all debris and potential contaminants are removed from the wound.
Choice C rationale
Holding the tip of the syringe at least 13 cm (0.5 in) above the wound while irrigating is not a standard practice. The syringe should be held close to the wound to ensure effective irrigation.
Choice D rationale
Flushing the wound from the most contaminated area to the cleanest area is not a standard practice. The wound should be irrigated from the cleanest to the dirtiest area to prevent the spread of contamination.
Correct Answer is C
Explanation
Choice A rationale
Detecting the scent of a rose is primarily associated with the olfactory system, not the tactile system.
Choice B rationale
Observing the color of a flower is primarily associated with the visual system, not the tactile system.
Choice C rationale
Feeling the texture of a fabric is primarily associated with the tactile system. The tactile system, part of the somatosensory system, allows us to perceive touch, pressure, temperature, pain, and vibration.
Choice D rationale
Hearing the sound of a bell is primarily associated with the auditory system, not the tactile system.
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