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 C

Explanation

A. Hormonal changes can occur, but they typically do not cause significant vasodilation or hypotension in the elderly.
B. Atrophy of the muscles causing venous insufficiency. While venous insufficiency can occur in aging, muscle atrophy is not the primary factor in this issue.
C. Peripheral blood vessels become more rigid producing a rise in systolic blood pressure. This is a common and expected finding in the elderly due to arteriosclerosis, leading to increased systolic blood pressure.
D. The inferior vena cava does not typically narrow with age, and varicosities are more likely due to vein elasticity changes, not narrowing.

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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