PSY BEH 137H Lecture Notes - Lecture 7: Common Cold, Immunity (Medical), Antibody
13 Sep 2017
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Document Summary
Job: distinguish "self" from "non-self, destroy "non-self" "self" is of the body, "non-self" is anything foreign (pathogens: two classes of immune defenses: Innate, non-specific immunity attacks anything that comes around (bacteria, pathogens, anything "non-self": first line of defense, relatively fast, anatomical barriers: skin, mucous membranes, phagocytes ("eaters", macrophages, neutrophils, the inflammatory response, a local response to infection. Immune cells brought in to destroy/inactivate foreign invaders: attack and isolate invaders, remove debris, prepare for healing and repair. Innate, nonspecific immunity (anatomical barriers, phagocytes, inflammation, natural killer cells) Indiscriminately destroys invaders: do not have to have been exposed before, acquired, specific immunity (cell-mediated, humoral immunity, reacts to a specific invader, quick response if previously exposed, immunological memory. Acute stressors: study, novice (first time) parachute jumpers, secured to an instructor during the jump. Increases in nk cell number and nk cell activity following the jump: non-specific immunity, decrease in proliferative response (lymphocyte function)
