HIV weakens the immune system by
A) overwhelming it with infection.
B) destroying antibodies.
C) attacking T cells.
D) attacking B cells.
E) All of the answers are correct.
C) attacking T cells.
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What is not true of the spleen?
A. The spaces in the lobes of the spleen are filled with lymph. B. It contains many phagocytes. C. It is the largest lymphatic organ. D. It contains nodules similar to lymphatic nodules.
Mary had her stomach mostly removed to try to overcome obesity. As a result, you would expect Mary to be at risk for
A) protein malnutrition. B) abnormal erythropoiesis. C) diarrhea. D) dehydration. E) an ulcer.
2,3-diphosphoglycerate
a. is produced within red blood cells. b. production is inhibited by HbO2. c. concentration gradually increases whenever Hb in the arterial blood is chronically undersaturated. d. both (a) and (b) above. e. all of these answers.
The statement "It sends its preganglionic fibers to terminal or intramural ganglia" is
A) true only for the parasympathetic nervous system. B) true only for the sympathetic nervous system. C) true for both the parasympathetic and sympathetic nervous systems. D) not true for either the parasympathetic or sympathetic nervous systems. E) true only for the somatic nervous system.