The HIV virus invades:.
Helper T cells (CD4 cells) eventually destroying them.
D cells.
B cells.
Helper C cells.
The Correct Answer is A
Choice A rationale:
HIV invades various immune cells, most notably CD4+ T cells, eventually destroying them.
Choice B rationale:
D cells are not a recognized category of immune cells, and HIV does not specifically invade them.
Choice C rationale:
While B cells are part of the immune system, HIV primarily targets CD4+ T cells, not B cells.
Choice D rationale:
Helper C cells are not a recognized category of immune cells, and HIV does not specifically invade them.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
The correct answer is Choice C. -
Choice A rationale:
The larynx is part of the airway but does not prevent aspiration. -
Choice B rationale:
The trachea is the airway leading to the lungs but does not prevent aspiration. -
Choice C rationale:
The epiglottis is a flap of tissue that covers the airway during swallowing, preventing food from entering the lungs. -
Choice D rationale:
The pharynx is part of the throat but does not prevent aspiration.
So, the correct answer is C, after analyzing all choices.
Correct Answer is B
Explanation
Choice A rationale:
Vasodilation increases the diameter of blood vessels, which decreases resistance and thus decreases pressure. However, the increased diameter allows for increased blood flow, not decreased.
Choice B rationale:
Vasodilation decreases pressure due to the increased diameter of the blood vessels, and it increases flow because of the reduced resistance to blood flow.
Choice C rationale:
Vasodilation does not increase pressure; it decreases it.
Choice D rationale:
While vasodilation decreases pressure, it does not decrease flow; it increases it.
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