Question
llil es: (2 points each) Choices: destroyed by antibodies and complement Thisis an esar A anaphy laki complex reactie 32, which of the following is nat D cell medi ted reaction minimizes graft reject true about immunosupprewaen treatment? D, is needed when privileged tissu trasplwud 33. An autoimmune disorder is one in which the body A develops immunity exceptionally quickly C forms on of the thymus during infancy D. anitbodies or specific T eells against one of its own tissue antigen E. develops immunity to disease wi the help of immunization cannot develop immunity even after repeated exposure to the antigen 34 To prevent hemolytic disease of newborns. the RIn- epative mot Eiv" eller her delivery a A. antibiotics B. Rh antigen C, antibody aguind Rh wtiww D hool travfision 35. AIDS patients sufer from mmerous copomni because A. macroplages B. CD4 T lymphkoymes lymph eyes 36. Which body sine is protected from insectivas agents by the presence of actic acid, temy wids and ehunr A. upper respiratory tract 37. Which of the following cell serves as an anti Present ng to initiate an immune responu? A. PMN al phase of an infection? 38. Which one of the following predominates during A. PMN B, macrophage C, basuphil D, eosinophil E. K cells 39. The specificity of an antibody is due to e Land B. the constant reg ol A. the H chain ie Hand D, the varial C. the Lcha 40. which one of the following chemicals is the least antigenic? A lipid B 41. Which of the following regulates body temperature? B, thyroid gland C. hypothalamus D. heat A, thymus 42. The classic pathway for complement activatio is initiated b D acton released from damaged twvve A. B. Ag-Ab complex C heMamine 43. Which of the following statements is true? B. leweierons are nonwalce A Interferon directly attacks invading virus. D Interferon acts against speciie virus C Interferon or and B stimulate other cells to make AVPs, 44 Systemic lupus ery hematosus is an auwoimmune disewe D ai A, infectious disease B immunodeficiency disease C,
Explanation / Answer
31) Idiopathic thrombocytopenic purpura (ITP) is a bleeding disorder in which the platelets are destroyed by the presence of antibodies against it. ITP is also called immune thrombocytopenia. In children, ITP follows viral infections like measles, mumps and flu and resolves within 2 months. In adults, ITP persists for about 6 months.
Cytotoxic reactions involve the adsorption of antigens or haptens to tissue or cell membrane, with subsequent attachment of antibodies to the adsorbed antigens. This will lead to complement activation with subsequent lysis and destruction of cells. In Idiopathic thrombocytopenic purpura (ITP), plates are destroyed by cytotoxic reactions. So, the answer for this question is option (B).
Regarding other options,
