Exam 4: NU 606 NU606 Latest

Exam 4: NU 606 / NU606 (Latest

Update 2025 / 2026) Advanced Pathophysiology | Questions and Answers | Grade A | 100% Correct - 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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