A patient presents to a primary care provider reporting chest pain and is diagnosed with athero-sclerosis. This disease is caused by:
a. arterial wall thinning and weakening.
b. abnormally dilated arteries and veins.
c. abnormal thickening and hardening of vessel walls.
d. autonomic nervous system imbalances.
ANS: C
Atherosclerosis is a form of arteriosclerosis characterized by thickening and hardening of the vessel wall. Affected arteries are narrowed, not dilated. Atherosclerosis is not related to auto-nomic nervous system imbalances, which would lead to changes in rate or rhythm.
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