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Exam 4: NU 606 / NU606 (
Update 2025 / 2026) Advanced Pathophysiology Questions and Answers - Regis
Question:
why doesn't natural reduction in brain mass cause cognitive function to decrease in many individuals?
Answer:
there is considerable reserve of neurons
Question:
what are some degenerative changes in neurons
Answer:
lipid accumulations in the neurons, loss of myelin sheath, development of abnormal neurofibrils and plaques in the cell. vascular impairment due to arterioscerosis
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Question:
why is night vision impaired in elderly
Answer:
the lens becomes yellow and less transparent which impacts color perception especially blue hues as well as night vision. eventually cataracts may develop causing the lens to become opaque
Question:
what can atrophy of the mucosa glands and digestive tract cause in aging
Answer:
reduced digestive secretions and absorption of nutrients. example is b12, calcium, and iron, also less mucosa can cause peptic ulcer development
Question:
why is kidney function reduced in aging
Answer:
loss of glomeruli and degeneration of the tubules and blood vessels, cannot compensate as quickly to electrolyte and acid levels and drug excretion
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