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Immune-1 - Biology 111 1 2 3 4 5 6 7 8 9 4 1 3 3 3 1 1 1 2...

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Biology 111 The Immune System 1. 4. Correct . The bump is due to fluid accumulation. The redness and heat occurs due to increased circulation to the area. The tenderness is due to tissue damage and to edema. 2. 1. Correct . The histamine causes increased capillary permeability, and fluid leaks into the area. 3. No, although the increased capillary permeability facilitates migration by macrophages. 3. 3. Correct , increased red blood cell production is not included. 4. 3. Correct . They are proliferating to fight the infection. 5. 1. Correct . A typical Küppfer cell can destroy 100 bacteria/second. 6. 1. Correct . Natural killer cells fight intracellular infections or cancer. 7. 1. No, this sounds like the job of a macrophage or neutrophil. 2. Correct . They lyse cells to kill off intracellular invaders like viruses. 8. 4. Correct . In contrast, the nonspecific immune responses are equally effective against any invader. 9. 1. Correct . They are the first antigen-displaying cells of the immune response. Their role is to activate helper T cells.
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