UNMC Patho II exam 2 Questions and Verified Answers | Passed | A+
Immunity : Function of immune system is to protect body from invasion by foreign antigens to identify and destroy potentially harmful cells. Exaggerated immune response : -Against environmental antigens, allergy -Too much of an IR Misdirected IR against host's own cell : Autoimmunity Isoimmunity : Directed against beneficial foreign tissues Body's IS reacts against tissues of usually the same species -Transplanted tissue -Blood transfusion Immune deficiency : Deficient immune response 2 Hypersenstivity : -An exaggerated and inappropriate immune response -A pathologic IR Autoimmunity : Breakdown of "code of recognition" Body's immune system begins to recognize self-antigens as foreign Development of autoimmune response may be r/t : Genetics, exposure to antigens from drugs/infections Type I hypersenstivity : IgE mediated allergic reaction/anaphylaxis Type II hypersensitivity : Tissue specific, blood transfusion reaction Type III hypersensitivity : -Immune complex mediated reaction -AG-AB complexes form and deposit in tissues Type IV hypersensitivity : Cell mediated reactions, involve t-cells, macrophages Allergy/anaphylaxis : Rapid, immediate hypersensitivity reaction upon re-exposure to an antigen 3 Allergy/anaphylaxis systemic reacti
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