A nurse is assessing a client’s cranial nerves as part of a neurological examination. Which of the following actions should the nurse take to assess cranial nerve III?
Eliciting the gag reflex
Checking the pupillary response to light
Observing for facial symmetry
Testing visual acuity
The Correct Answer is B
Choice A reason: Eliciting the gag reflex is not a valid way to assess cranial nerve III. The gag reflex is a protective mechanism that prevents choking or aspiration by triggering a contraction of the pharyngeal muscles when the back of the throat is stimulated. The gag reflex is mediated by cranial nerves IX and X, not III.
Choice B reason: Checking the pupillary response to light is a reliable way to assess cranial nerve III. The pupillary response to light is a reflex that causes the pupil to constrict when exposed to bright light and dilate when exposed to dim light. This reflex helps to regulate the amount of light that enters the eye and protects the retina from damage. The pupillary response to light is controlled by cranial nerve III, which innervates the sphincter pupillae muscle that constricts the pupil.
Choice C reason: Observing for facial symmetry is not a relevant way to assess cranial nerve III. Facial symmetry is the degree of similarity between the two halves of the face. Facial symmetry can be affected by various factors, such as genetics, aging, or facial nerve palsy. Facial nerve palsy is a condition that causes weakness or paralysis of the muscles that control facial expression. Facial nerve palsy is caused by damage to cranial nerve VII, not III.
Choice D reason: Testing visual acuity is not a sufficient way to assess cranial nerve III. Visual acuity is the ability to see fine details and distinguish objects at a distance. Visual acuity depends on various factors, such as the clarity of the lens and cornea, the shape of the eyeball, and the function of the retina. Visual acuity is mainly affected by cranial nerve II, which carries visual information from the retina to the brain. Cranial nerve III does not directly influence visual acuity, but it does innervate some of the muscles that move the eye and enable binocular vision.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
The correct answer is: b. Mold
Choice A: Radon
Radon is a radioactive gas that can cause lung cancer, but it is not specifically linked to asthma or allergies. While it is important to avoid radon for overall health, it is not a primary environmental trigger for asthma or allergies.
Choice B: Mold
Mold is a common allergen that can significantly worsen asthma and allergy symptoms. Mold spores can be inhaled, leading to respiratory issues, including asthma attacks and allergic reactions. Therefore, avoiding mold is crucial for individuals with asthma and allergies.
Choice C: Cockroaches
Cockroaches are known to be a significant trigger for asthma and allergies. Their droppings, saliva, and shed body parts can become airborne and exacerbate asthma and allergy symptoms. Avoiding cockroaches is important, but mold is typically a more direct and common trigger.
Choice D: Hepatitis B
Hepatitis B is a viral infection that affects the liver and is not related to asthma or allergies. It is important to avoid Hepatitis B for other health reasons, but it does not influence asthma or allergy symptoms.
Correct Answer is D
Explanation
Choice A reason: Overflow incontinence is not the type of urinary incontinence that the client is experiencing. Overflow incontinence occurs when the bladder is overfilled and cannot empty properly, causing frequent or constant dribbling of urine. It can be caused by a blockage in the urinary tract, such as an enlarged prostate or a kidney stone, or by a weak bladder muscle that cannot contract enough to empty the bladder.
Choice B reason: Urge incontinence is not the type of urinary incontinence that the client is experiencing. Urge incontinence occurs when the bladder muscle contracts involuntarily and causes a sudden and strong urge to urinate, followed by an involuntary loss of urine. It can be caused by an infection, a neurological disorder, or an overactive bladder.
Choice C reason: Stress incontinence is not the type of urinary incontinence that the client is experiencing. Stress incontinence occurs when the pelvic floor muscles or the urethral sphincter are weakened or damaged and cannot hold urine in the bladder when there is increased abdominal pressure, such as from coughing, sneezing, laughing, or exercising. It can be caused by pregnancy, childbirth, menopause, or surgery.
Choice D reason: Reflex incontinence is the type of urinary incontinence that the client is experiencing. Reflex incontinence occurs when the bladder muscle contracts without the sensation or control of the person, causing urine to leak without warning or awareness. It can be caused by nerve damage that affects the communication between the bladder and the brain, such as from a spinal cord injury, a stroke, or multiple sclerosis..
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