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 A
Explanation
A. Occasional forgetfulness or inability to recall names or facts
This is a normal part of aging, often referred to as “senior moments,” and does not interfere significantly with daily functioning.
B. Difficulty in recalling recent events
May indicate early dementia or mild cognitive impairment, not considered normal.
C. Difficulty in recalling past events
Long-term memory is usually preserved in normal aging; trouble with past events is not typical.
D. Relying on another person to remember names or important events
Indicates greater memory difficulty, which may be a sign of cognitive decline rather than normal aging.
Correct Answer is D
Explanation
A. They affect more women than men
There is no consistent evidence that one sex is more affected than the other.
B. They are always caused by disease
Many chemosensory changes occur due to natural aging, not just disease.
C. They begin in the fifth decade of life
While possible, changes can begin earlier or later depending on multiple factors.
D. They are directly related to the aging process
Diminished taste and smell are common and normal changes of aging due to loss of receptor cells and reduced nerve function.
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