What effect does atherosclerosis have on the development of an aneurysm?
Atherosclerosis erodes the vessel wall
Atherosclerosis causes ischemia of the intima
It obstructs the vessel
It increases nitric oxide
The Correct Answer is A
Choice A reason: Atherosclerosis erodes the vessel wall by forming plaques that weaken arterial layers, promoting aneurysm formation. This degenerative process destabilizes the wall, making it the correct effect in aneurysm development.
Choice B reason: Ischemia of the intima is not a primary atherosclerosis effect; plaques cause wall damage, not just intimal ischemia. Vessel wall erosion is more accurate for aneurysm formation, so this is incorrect.
Choice C reason: Atherosclerosis narrows vessels but doesn’t primarily obstruct them in aneurysm formation. Wall erosion and weakening lead to dilation, not blockage, so this is incorrect for aneurysm development.
Choice D reason: Atherosclerosis reduces nitric oxide, impairing vasodilation, but this isn’t directly linked to aneurysms. Vessel wall erosion by plaques is the key mechanism, so this is incorrect for the effect.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","C"]
Explanation
Choice A reason: DiGeorge disease involves thymic hypoplasia or aplasia, impairing T-cell development. This is a primary cause, leading to immune deficiency, making it a correct choice for the condition’s etiology.
Choice B reason: B-cell maturation is generally preserved in DiGeorge disease, as it primarily affects T-cells due to thymic defects. T-cell issues are central, so this is incorrect for the cause.
Choice C reason: T cells cannot mature in DiGeorge disease due to thymic underdevelopment, causing severe immunodeficiency. This is a core feature of the syndrome, making it a correct choice for the cause.
Choice D reason: Humans lack a bursa; B-cell maturation occurs in bone marrow. DiGeorge affects the thymus and T-cells, not a nonexistent bursa, so this is incorrect for the cause.
Correct Answer is B
Explanation
Choice A reason: Infarction is permanent tissue death from prolonged blood loss, not temporary deprivation. Ischemia describes reversible reduced blood supply, matching the question, so this is incorrect.
Choice B reason: Ischemia is the temporary deprivation of blood supply to cells, causing reduced oxygen delivery but potentially reversible damage. This fits the description, making it the correct term.
Choice C reason: Necrosis is irreversible cell death, not temporary blood supply loss. Ischemia is the term for reversible deprivation, so this is incorrect for the described condition.
Choice D reason: Inflammation is a response to injury, not blood supply deprivation. Ischemia specifically refers to temporary reduced blood flow, so this is incorrect for the term.
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