The primary cells affected by HIV infection are:
All white blood cells
CD4 cells only
T suppressors cells
T helper cells
The Correct Answer is D
A. While HIV affects a range of immune cells, it specifically targets certain types.
B. CD4 cells include T helper cells, but stating only CD4 cells oversimplifies the response.
C. T suppressor cells, while affected by HIV, are not the primary targets.
D. T helper cells, which express the CD4 surface marker, are the primary targets of HIV, leading to the characteristic immunosuppression seen in the infection.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Crohn's disease can cause granulomatous inflammation that leads to strictures in the bowel, increasing the risk of obstruction.
B. While Crohn's disease often affects the small intestine, ulcerative colitis typically affects the colon, and both can lead to obstructions, but the nature of Crohn's lesions contributes more to this risk.
C. Abdominal pain and diarrhea are symptoms but do not specifically explain obstruction risk.
D. Dietary triggers may exacerbate symptoms but are not a primary reason for increased obstruction risk in Crohn's.
Correct Answer is A
Explanation
A. An epidemic refers to a sudden increase in the number of cases of a disease above what is normally expected in a specific area or population. The localized nature of the increase in ringworm infections supports this classification.
B. Endemic refers to a disease or condition regularly found among particular people or in a certain area; it does not account for the sudden spike in infections.
C. A pandemic involves widespread outbreaks affecting multiple countries or continents, which does not apply here.
D. Prevalence measures how widespread a disease is within a population, but it does not reflect sudden increases.
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