The nurse is testing the function of CN XI. Which statement best describes the response the nurse should expect if this nerve is intact? The patient.

Demonstrates the ability to hear normal conversation.

Moves the head and shoulders against resistance with equal strength

Follows an object with his or her eyes without nystagmus or strālismus

Sticks out the tongue midline without tremors or deviation.

Answer and Explanation

The Correct Answer is B

A.   This tests cranial nerve VIII (vestibulocochlear), not cranial nerve XI.
B.   Moves the head and shoulders against resistance with equal strength. Cranial nerve XI (accessory nerve) innervates the sternocleidomastoid and trapezius muscles. The expected response would be equal strength when the patient moves their head and shoulders against resistance.
C.   Follows an object with his or her eyes without nystagmus or strabismus. This describes the function of cranial nerve II (optic) or cranial nerve III (oculomotor), not cranial nerve XI.
D.   Sticks out the tongue midline without tremors or deviation. This tests cranial nerve XII (hypoglossal), not cranial nerve XI.

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Correct Answer is A

Explanation

A. The frontal lobe is responsible for a variety of functions, including personality, behavior, judgment, and emotional regulation. It also plays a key role in problem-solving and decision-making. Changes in these areas, such as the emotional instability (crying and anger) described in the question, are often linked to frontal lobe dysfunction.
B. The occipital lobe is primarily responsible for visual processing. Damage or issues in the occipital lobe typically affect vision, such as causing blindness or visual disturbances, rather than emotional or behavioral changes like those described in the scenario.
C. The temporal lobe is involved in processing auditory information, memory, and language. While damage to the temporal lobe can affect memory or speech, it is not primarily responsible for the emotional and personality changes described in the scenario. Temporal lobe damage is more commonly associated with memory loss or issues with speech.
D. The parietal lobe is responsible for sensory information and spatial awareness. While damage here can lead to problems with spatial orientation or sensation, it is not directly responsible for emotional regulation or changes in personality and behavior like those described in the question.

A. Observing for facial symmetry B. Testing visual acuity C. Eliciting the gag reflex D. Checking the pupillary response to light

Correct Answer is A

Explanation

A. Cranial nerve 11, the accessory nerve, controls the sternocleidomastoid and trapezius muscles, which contribute to the movement of the neck and shoulders. However, while facial symmetry is related to other cranial nerves, this is the correct action for cranial nerve 11's motor function testing.
B. Visual acuity is related to cranial nerve II (optic nerve), not cranial nerve XI.
C. The gag reflex tests cranial nerves IX (glossopharyngeal) and X (vagus), not cranial nerve XI.
D. Checking the pupillary response to light. The pupillary light reflex is controlled by cranial nerve II (optic) and cranial nerve III (oculomotor), not cranial nerve XI.

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The nurse is testing the function of CN XI. Which statement best describes the response the nurse should expect if this nerve is intact? The patient.

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Naxlex Comprehensive Predictor Exams

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Correct Answer is A

Explanation

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Explanation

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