Update ) 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
, 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