BIOL 1202 Chapter : Chapter 43 + Mastering Biology
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Internal defenses: antimicrobial proteins, these proteins function by attacking microbs directly or by impeding reproduction, complement system: causes lysis of invading cells and helps trigger inflammation. Interferons: released by virally-infected cells: helps healthy cells resist infection, activates macrophages. 43. 4: disruptions in immune system can elicit or exacerbate disease: allergies (f43. 20, allergies are exaggerated (hypersensitive) responses to antigens (called allergens, autoimmune disesases (f43. 21, conditions where antibodies and immune system cells mistakenly attack the body"s own cells, ex: Insulin dependent diabetes mellitus type i diabetes: multiple sclerosis, rheumatoid arthristis. Mastering biology: acquired immunity involves both a humoral immune response and a cell-mediated immune response to a specific antigen in the body. The two responses are not independent of each other, but rather form an interlinking web. B cells are active in the humoral response. Cytotoxic t cells are active in the cell-mediated response.
