What are the effects of aging on the nervous system?
Accelerated loss of neurons in the brain
Increased conduction speed of neurons
Decrease of short-term memory
Gradually declining loss of intellectual capability
The Correct Answer is C
A. Accelerated loss of neurons in the brain
Neuron loss occurs gradually. "Accelerated" implies rapid degeneration, which would be pathological, not normal aging.
B. Increased conduction speed of neurons
This is incorrect; aging is associated with decreased conduction speed due to demyelination and slower synaptic transmission.
C. Decrease of short-term memory
Short-term memory loss is a common age-related change in cognition, even in healthy aging.
D. Gradually declining loss of intellectual capability
While processing speed may decline, intellectual capacity (such as vocabulary and long-term memory) is generally preserved in normal aging.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. 24-hour dietary intake of 75% of meals
This indicates adequate intake and is generally not concerning.
B. 24-hour urinary output of 1450 mL
This is within the normal range for urinary output and does not indicate GI dysfunction.
C. Weight loss of 2 lb since admission 2 months ago
While unintended weight loss in older adults is important, 2 pounds over 2 months is mild and not the most urgent finding.
D. Last bowel movement 4 days ago
Constipation is common but potentially serious in older adults. Not having a bowel movement for 4 days increases the risk for fecal impaction, discomfort, or bowel obstruction, and warrants intervention.
Correct Answer is D
Explanation
A. Renal calculi
Kidney stones are not age-specific and are not directly caused by aging kidneys.
B. Urgency incontinence
While incontinence is common, urgency may relate more to bladder or neurologic conditions, not specific renal aging.
C. Hematuria
Blood in urine is abnormal at any age and indicates underlying pathology (e.g., infection, cancer).
D. Nocturia
A typical age-related renal change is a reduced ability to concentrate urine, leading to increased nighttime urination.
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