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
Excessive thirst and urination are symptoms of hyperglycemia, not hypoglycemia. Hyperglycemia could occur if the TPN solution was infusing too quickly, but it would not be a result of the infusion pump not working.
Choice B rationale
Shakiness and diaphoresis are manifestations of hypoglycemia. When a sudden interruption in the infusion of TPN occurs, the patient is at risk for hypoglycemia.
Choice C rationale
Fever and chills are symptoms of infection, not a direct result of the TPN infusion stopping.
Choice D rationale
Hypertension and crackles in the lungs are signs of fluid overload, not hypoglycemia. These symptoms would not be expected if the TPN infusion stopped.
Correct Answer is B
Explanation
Choice A rationale
Emptying the drainage bag when half full is a correct action by the AP4. It is important to empty the drainage bag regularly to prevent infection and maintain accurate intake and output records.
Choice B rationale
Placing the drainage bag on the side rail of the patient’s bed is an incorrect action by the AP4. The drainage bag should be placed below the level of the bladder to prevent backflow of urine, which can lead to infection.
Choice C rationale
Kinking the catheter tubing to obtain a urine specimen is an incorrect action by the AP4. This can cause discomfort to the patient and potentially damage the catheter.
Choice D rationale
Securing the catheter tubing to the patient’s thigh is a correct action by the AP4. This helps to prevent pulling on the catheter, which can cause discomfort and potential damage to the urethra.
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