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Age-Related Neurologic Changes

The greatest age-related differences in gray matter occur in which area of the brain?

A. Prefrontal cortex

B. Motor cortex

C. Occipital cortex

D. Sensory cortex

A. Prefrontal cortex

Juggling is a bimanual task and these bimanual skills would be expected to decline with aging due to changes in which area of the brain?

A. Cingulate gyrus

B. Corpus callosum

C. Hippocampus

D. Occipital cortex

B. Corpus callosum

Decreased levels of which of the following neurotransmitters has been correlated with declines in activity level in an animal model?

A. Acetylcholine

B. Dopamine

C. Norepinephrine

D. Serotonin

D. Serotonin

In aging it is noted that muscle fiber conversion to a slow twitch type occurs. This is proposed to be at least in part due to:

A. Degeneration of the dorsal root ganglion

B. Denervation followed by regeneration of distal axons

C. Loss of preganglionic cell bodies in the sympathetic outflow tract

D. Reduction in myelinated fibers in the fasciculus gracilis

B. Denervation followed by regeneration of distal axons

Mrs. Smith who is 90 years old is unable to leave her home without assistance due to difficulty ambulating on uneven surfaces and an inability to step up or down from curbs. These functional losses would be considered normal age-related declines associated with aging. True or False.

A. True

B. False

B. False

Mr. Thomas who is 70 years old goes to his local gym and lifts weights four times a week. He does not participate in any aerobic exercises. This exercise program could provide which of the following benefits to Mr. Thomas:

A. Upregulation of BDNF

B. Less atrophy of the cerebellum

C. Reversal of fiber type conversion in exercised muscles

D. None of the above, only aerobic exercise improves neurologic function

A. Upregulation of ...

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