A 45-year-old man on the neurology floor can understand instructions but is unable to express himself through talking. Which lobe of the brain controls the expression of speech?
Frontal lobe
Occipital lobe
Temporal lobe
Parietal lobe
The Correct Answer is A
Choice A rationale: The frontal lobe, specifically Broca's area located in the dominant hemisphere, is responsible for expressive speech. Damage to this area can result in expressive aphasia or difficulty expressing speech.
Choice B rationale: The occipital lobe primarily processes visual information.
Choice C rationale: The temporal lobe is involved in auditory processing and language comprehension.
Choice D rationale: The parietal lobe is involved in spatial perception, attention, and sensory information processing.
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Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A rationale: Metformin belongs to the biguanide class of antidiabetic medications.
Choice B rationale: Pioglitazone is a thiazolidinedione used to treat diabetes, not a sulfonylurea.
Choice C rationale: Glipizide is a sulfonylurea used to stimulate insulin secretion in type 2 diabetes.
Choice D rationale: Repaglinide is a meglitinide, another class of drugs that stimulates insulin release.
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Correct Answer is B
Explanation
Choice A rationale: Metformin does not significantly affect insulin release from the pancreas or glucagon secretion but reduces glucose production by the liver and enhances insulin sensitivity in tissues.
Choice B rationale: Metformin primarily works by reducing glucose production in the liver and improving the body's response to insulin, thereby lowering blood sugar levels.
Choice C rationale: Metformin does not notably slow carbohydrate absorption in the small intestine.
Choice D rationale: Metformin does not directly increase insulin production from the pancreas.
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