Which important white blood cells travel throughout the bloodstream seeking out bacteria?.
Neutrophils.
Macrophages.
Phagocytes.
Phagosomes.
The Correct Answer is A
Choice A rationale:
Neutrophils are the most abundant type of white blood cells and are the first to travel to the site of an infection.
Choice B rationale:
Macrophages are white blood cells that reside in tissues and are key players in the immune response, but they do not travel throughout the bloodstream seeking out bacteria.
Choice C rationale:
Phagocytes is a general term for cells that engulf and digest pathogens, which includes neutrophils and macrophages.
Choice D rationale:
Phagosomes are not cells, but are compartments within phagocytes that contain pathogens to be destroyed.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
The correct answer is Choice B.
Choice A rationale:
Venules are small vessels that collect blood from the capillaries and transport it to the veins. They are not primarily involved in the exchange of nutrients, wastes, and hormones.
Choice B rationale:
Capillaries are tiny vessels that branch out from arterioles to form networks around body cells. They are the primary sites for the exchange of gases, nutrients, and waste between blood and tissues.
Choice C rationale:
Arterioles are small branches of arteries that lead to capillaries. They primarily regulate blood pressure and blood flow, not the exchange of substances.
Choice D rationale:
Veins carry deoxygenated blood back to the heart. They are not the primary sites for substance exchange.
Correct Answer is B
Explanation
Choice A rationale:
Atherosclerosis does not involve the stretching of arteries.
Choice B rationale:
Atherosclerosis is characterized by the hardening of the arteries due to the buildup of plaque.
Choice C rationale:
Aging of the arteries is not the correct term for atherosclerosis.
Choice D rationale:
While plaque buildup is a feature of atherosclerosis, this choice does not fully capture the hardening aspect of the condition.
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