The six (6) eye muscles that control eye movement are innervated by cranial nerves:
I, II, V.
III, IV, VI.
III, V, XI.
II, V, VI. .
The Correct Answer is B
Choice A rationale
Cranial nerve I (olfactory) is responsible for smell, and cranial nerve II (optic) is responsible for vision. Cranial nerve V (trigeminal) is involved in facial sensation and mastication. These nerves are not primarily involved in controlling the extrinsic eye muscles responsible for eye movement.
Choice B rationale
Cranial nerve III (oculomotor) innervates the superior, inferior, and medial recti, and the inferior oblique muscles, and controls eyelid elevation. Cranial nerve IV (trochlear) innervates the superior oblique muscle. Cranial nerve VI (abducens) innervates the lateral rectus muscle. Together, these three cranial nerves precisely coordinate all six extraocular muscles for conjugate gaze.
Choice C rationale
While cranial nerve III (oculomotor) is correctly identified, cranial nerve V (trigeminal) and cranial nerve XI (accessory) are not primarily involved in eye movement. Cranial nerve V is involved in facial sensation and mastication, and cranial nerve XI innervates the sternocleidomastoid and trapezius muscles for head and shoulder movement.
Choice D rationale
Cranial nerve II (optic) is responsible for vision, transmitting visual information from the retina to the brain. Cranial nerve V (trigeminal) is involved in facial sensation and chewing. Cranial nerve VI (abducens) is correctly identified as innervating the lateral rectus, but the other two nerves listed do not control the majority of eye movements.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A rationale
While palpation is a critical skill, this statement does not directly complete the given sentence which defines palpation as a technique. The existing sentence establishes the "what" of palpation, and the completion should elaborate on "how" it's performed or its direct characteristics.
Choice B rationale
Palpation certainly helps identify abnormalities, but this statement describes a benefit or outcome of the technique, not the core method itself as described in the initial sentence. The sentence sets up the physical action, not its diagnostic utility.
Choice C rationale
This choice logically completes the sentence by explaining the *methodology* of palpation, directly following the description of the senses involved and what is being assessed. It specifies that the technique involves "careful and systematic touching of the body," which directly relates to the physical act of assessment.
Choice D rationale
Proper palpation technique ensures accurate examinations, but this statement focuses on the *quality* of the technique rather than describing the technique itself. The initial sentence defines the technique; the completion should expand on its execution, not its outcome. .
Correct Answer is C
Explanation
Choice A rationale
"Right medication" refers to ensuring that the drug administered is precisely the one prescribed by the healthcare provider. This involves verifying the medication name, strength, and formulation against the order. In this scenario, the issue is not the medication itself, but rather the timing of its administration, making this choice incorrect.
Choice B rationale
"Right route" pertains to administering the medication via the prescribed pathway (e.g., oral, intravenous, subcutaneous). This ensures that the drug reaches the systemic circulation or target site effectively. The scenario explicitly states "oral guaifenesin," indicating the route was correct; the error lies in the timing.
Choice C rationale
"Right time" is a crucial aspect of medication administration, ensuring that the drug is given at the prescribed frequency and within the specified time window. Administering a medication 2 hours after its scheduled dose constitutes a deviation from the ordered time, potentially affecting its therapeutic efficacy or peak plasma concentration.
Choice D rationale
"Right dose" involves verifying that the amount of medication given is precisely what was ordered, preventing under-dosing or over-dosing. The scenario does not indicate any error in the quantity of guaifenesin administered, only the timing of its delivery. Therefore, this choice is not applicable to the described problem.
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