BIOL 1002 Chapter : Ch 36 Notes
Document Summary
Chapter 36: defense against disease: the immune system. Lines of defense: the body has three lines of defense against microbial attack: (see fig. Innate immune response - non-specific internal defenses to combat all invading microbes: adaptive immune response - immune response directed against specific microbes. In addition, mucus physically traps microbes entering through nose or mouth. (see fig. 36-2: membrane cilia sweep up mucus and microbes and they are coughed or sneezed out of the body. If microbes are swallowed, stomach acid and protein-digesting enzymes destroy them: the innate immune response nonspecific internal defenses attack a wide variety of microbes. Non-specific internal defenses: there are four nonspecific internal defenses, phagocytic cells, natural killer cells. Inflammatory response: fever, phagocytic cells and natural killer cells are eaters and killers , the phagocytic cells are the white blood cells (wbcs) macrophages in the extracellular fluid.
