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 C
Explanation
Choice A rationale
While a patient’s medication history can impact wound healing, in this case, there is no specific information provided about the patient’s medications that would suggest a delay in wound healing.
Choice B rationale
Although the patient’s cholesterol level is elevated, hyperlipidemia is not typically associated with delayed wound healing.
Choice C rationale
Prealbumin is a marker of nutritional status. A low prealbumin level, like in this patient, could indicate malnutrition, which can delay wound healing. Adequate nutrition is essential for wound healing as it provides the necessary building blocks for tissue repair.
Choice D rationale
The patient’s fasting glucose level is within the normal range, so it is unlikely to impact wound healing. While poorly controlled diabetes can delay wound healing, this patient’s diabetes appears to be well-controlled.
Correct Answer is ["125"]
Explanation
Step 1 is to understand the question. The patient has been prescribed vancomycin 1 g in 250 mL dextrose 5% (D5W) to be administered over 2 hours via IV intermittent bolus. We need to calculate how many mL/hr the nurse should set the IV pump to deliver.
Step 2 is to calculate the rate. The total volume to be administered is 250 mL and the time for administration is 2 hours. So, the rate is 250 mL ÷ 2 hours = 125 mL/hr.
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