Which cranial nerve is responsible for the sense of smell?

V – Trigeminal.

II – Optic.

I – Olfactory.

VIII – Vestibulocochlear.

Answer and Explanation

The Correct Answer is C

Choice A reason: The trigeminal nerve (V) controls facial sensation and chewing, not smell, which is governed by the olfactory nerve (I). Misidentifying this risks incorrect neurological assessment, potentially missing olfactory deficits indicating brain injury or tumors, critical for accurate diagnosis and management in patients with sensory complaints.

Choice B reason: The optic nerve (II) governs vision, not smell, which is the olfactory nerve’s function (I). Assuming optic involvement misguides cranial nerve assessment, risking oversight of olfactory dysfunction, which may signal neurological conditions like Parkinson’s or trauma, requiring targeted evaluation and intervention in clinical practice.

Choice C reason: The olfactory nerve (I) is responsible for the sense of smell, transmitting sensory input from the nasal mucosa to the brain. Accurate identification ensures proper neurological assessment, detecting deficits that may indicate trauma, tumors, or neurodegenerative diseases, guiding diagnosis and treatment in patients with smell-related complaints.

Choice D reason: The vestibulocochlear nerve (VIII) controls hearing and balance, not smell, which is the olfactory nerve’s role (I). Misidentifying this risks incorrect assessment, potentially overlooking olfactory issues signaling neurological pathology, delaying diagnosis and management critical for addressing sensory deficits in clinical neurological evaluations.

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Correct Answer is C

Explanation

Choice A reason: Asking about the time assesses temporal orientation, a component of cognitive function, but is less comprehensive than date recall. Time awareness can vary due to environmental factors or confusion, making it less reliable for evaluating overall orientation in older adults, who may have memory deficits.

Choice B reason: Asking if the patient can stand up tests physical ability, not cognitive orientation. Orientation assessment focuses on awareness of time, place, and person, critical for detecting delirium or dementia. Physical tests are irrelevant to mental status evaluation, making this an inappropriate question.

Choice C reason: Asking for the date evaluates orientation to time, a key component of cognitive assessment in older adults. It tests memory and awareness, crucial for detecting cognitive impairments like dementia. This question is specific, measurable, and aligns with standard mental status examinations, making it the most appropriate.

Choice D reason: Asking about feelings assesses emotional state, not orientation. While relevant for overall health, it does not evaluate cognitive awareness of time, place, or person. Orientation questions target memory and perception, critical for neurological assessment, rendering this choice less relevant for the task.

A. Limited ability to reposition B. Requires stand-by assistance for ADLs C. Poor nutritional state D. Presence of moisture due to incontinence, wound drainage, or perspiration

Correct Answer is B

Explanation

Choice A reason: Limited ability to reposition is a major risk factor for pressure injuries, as immobility increases pressure on bony prominences, reducing blood flow and causing tissue ischemia. This leads to skin breakdown, particularly in bedridden patients, making it a critical factor in pressure ulcer development.

Choice B reason: Requiring stand-by assistance for activities of daily living (ADLs) indicates some mobility, as the patient can perform tasks with supervision. This does not inherently increase pressure injury risk, unlike immobility or moisture, making it the least relevant risk factor among the choices.

Choice C reason: Poor nutritional state is a risk factor for pressure injuries, as malnutrition impairs skin integrity and wound healing. Deficiencies in protein or vitamins reduce tissue resilience, increasing susceptibility to pressure-induced damage, particularly in elderly or debilitated patients.

Choice D reason: Moisture from incontinence, wound drainage, or perspiration softens skin, increasing friction and shear forces, which heighten pressure injury risk. It compromises skin barrier function, promoting maceration and ulceration, making it a significant contributor to pressure ulcer formation.

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Which cranial nerve is responsible for the sense of smell?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

The nurse is assessing an older adult’s orientation. Which question is most appropriate?

Correct Answer is C

Explanation

Which is not a risk factor for pressure injuries?

Correct Answer is B

Explanation

What is not a social determinant of health in the below?

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