When inspecting a patient's eyes, the nurse assesses the presence of cranial nerve III (oculomotor nerve) by observing the eyelids open and close bilaterally.
What other technique does a nurse use to test the function of this cranial nerve?
Visual acuity.
Peripheral vision.
Presence of the red reflex.
Pupillary constriction to light.
The Correct Answer is D
Choice A rationale
Visual acuity tests assess the clarity of vision and the ability to discern letters or numbers at a set distance. It is used to test the function of cranial nerve II (optic nerve) rather than cranial nerve III (oculomotor nerve). Testing visual acuity involves using eye charts and assessing each eye separately.
Choice B rationale
Peripheral vision tests evaluate the ability to see objects outside the direct line of vision and are used to test the function of cranial nerve II (optic nerve). Peripheral vision assessment helps in diagnosing conditions like glaucoma but does not test the function of cranial nerve III.
Choice C rationale
The presence of the red reflex is assessed by looking into the eye with an ophthalmoscope to check for abnormalities in the eye's posterior segment. It is not related to the function of cranial nerve III but rather indicates healthy eye structures, including the retina and optic nerve (cranial nerve II).
Choice D rationale
Pupillary constriction to light is a direct test of cranial nerve III function. The oculomotor nerve controls the constriction of the pupil in response to light. By shining a light into the eyes and observing the pupils' response, the nurse can assess the integrity of cranial nerve III.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale
Flatness is the percussion sound typically heard over muscles and solid tissues. It is characterized by a high-pitched, soft sound, which indicates that the underlying tissue is denser and less air-filled compared to lungs.
Choice B rationale
Dullness is heard over solid organs such as the liver or spleen but not typically over muscles.
Choice C rationale
Tympany is a drum-like sound heard over areas filled with gas, such as the stomach or intestines.
Choice D rationale
Resonance is heard over air-filled lungs and not over muscles and solid tissues.
Correct Answer is B
Explanation
Choice A rationale
5th ICS Left MCL is the location for the apical impulse (point of maximal impulse), not Erb's Point.
Choice B rationale
Erb's Point is located at the 3rd ICS Left SB and is significant for auscultation of heart sounds, particularly the S1 and S2 sounds.
Choice C rationale
2nd ICS Left SB is the location for auscultating the pulmonic valve area.
Choice D rationale
4th ICS Left SB is where the tricuspid valve is auscultated.
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