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| 1 . |
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The primary function of the lymphatic system is: [Hint]
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| 2 . |
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Lymphocytes that assist in the regulation and coordination of the immune response are: [Hint]
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| 3 . |
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Normal lymphocyte populations are maintained through lymphopoiesis in the: [Hint]
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| 4 . |
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The largest collection of lymphoid tissue in the body is contained within the: [Hint]
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| 5 . |
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Of the following selections, the one that includes only nonspecific defenses is: [Hint]
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| 6 . |
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The protective categories that prevent the approach of, deny entrance to, or limit the spread of microorganisms or other environmental hazards are called: [Hint]
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| 7 . |
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NK (natural killer) cells sensitive to the presence of abnormal cell membranes are primarily involved with: [Hint]
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| 8 . |
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The four general characteristics of specific defenses include: [Hint]
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| 9 . |
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The two major ways that the body "carries out" the immune response are: [Hint]
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| 10 . |
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A "specific" defense mechanism is always activated by: [Hint]
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| 11 . |
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The type of immunity that develops as a result of natural exposure to an antigen in the environment is: [Hint]
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| 12 . |
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When an antigen appears, the immune response begins with: [Hint]
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| 13 . |
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T-cell activation leads to the formation of cytotoxic T cells and memory T cells that provide: [Hint]
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| 14 . |
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Before an antigen can stimulate a lymphocyte, it must first be processed by a: [Hint]
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| 15 . |
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An active antibody is shaped like a(n): [Hint]
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| 16 . |
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Antibodies may promote inflammation through the stimulation of: [Hint]
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| 17 . |
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The antigenic determinant site is the certain portion of the antigen's exposed surface where: [Hint]
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| 18 . |
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In order for an antigenic molecule to be a complete antigen, it must: [Hint]
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| 19 . |
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The major components of the lymphatic system include: [Hint]
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| 20 . |
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Lymphatic organs found in the lymphatic system include: [Hint]
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| 21 . |
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Phagocytic cells that display foreign antigens coupled to MHC II molecules on their surface include: [Hint]
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| 22 . |
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The HIV virus causes AIDS by infecting: [Hint]
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| 23 . |
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Lymphocytes that mature in the thymus participate in: [Hint]
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Answer choices in this exercise are randomized and will appear in a different order each time the page is loaded.
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