Which statement most correctly describes the main function of the lymph nodes?.
The production of lymphatic fluid.
The filtration of blood plasma to remove excess white blood cells.
The production of antibodies.
The removal of pathogens and foreign material from lymphatic fluid.
The Correct Answer is D
Choice A rationale:
Lymph nodes do not produce lymphatic fluid, they filter it.
Choice B rationale:
Lymph nodes do not filter blood plasma to remove excess white blood cells. They filter lymphatic fluid to remove foreign invaders.
Choice C rationale:
While lymph nodes do contain cells that can produce antibodies, this is not their main function.
Choice D rationale:
The main function of lymph nodes is to filter lymphatic fluid and remove pathogens and foreign material.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale:
T cells mature in the thymus.
Choice B rationale:
While red bone marrow is where all blood cells, including T cells, originate, T cells specifically mature in the thymus. Choices C and D rationale: Tonsils and the spleen are parts of the lymphatic system, but they are not where T cells mature.
So, the correct answer is Choice A, after analyzing all choices.
Correct Answer is B
Explanation
Choice A rationale:
While veins do convey blood back to the heart, this is not the reason they are called capacitance vessels.
Choice B rationale:
Veins are referred to as capacitance vessels because they can stretch and contain about 60% of the body’s blood volume.
Choice C rationale:
Although veins contain one-way valves, this characteristic does not define them as capacitance vessels.
Choice D rationale:
Veins can constrict, but this is not the primary reason they are known as capacitance vessels.
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