Inflammation, Altered Immunity and Infection Exam Questions With Correct Answers

Inflammation, Altered Immunity and Infection Exam Questions With Correct Answers Function of T-Cells (T-lymphocytes) - answergoverns cell mediated immunity/response T-cytotoxic cells (T8, CD8, killer Ts) - answerkill virus infected cells, tumor cells, and allograft cells by releasing cytotoxic chemicals T-Help cells (T4) - answerActivate other CD4 cells. Release lymphokines that begin the inflammatory process and mediate delayed hypersensitivity reactions (TB skin test) NK killer cells - answerContain granules that attack and kill virus-infected or cancerous cells active aquired immunity - answerobtained after exposure to an antigen, improves with repeat exposure and is specific. produced by the host after exposure to an antigen or immunization. passive aquired immunity - answeracquired via the transfer of antibodies, or t cells to the recipient. can be natural or artificial. Natural: from mother to fetus via breast milk or through placenta artificial: antibodies are given to recipient to provide immunity, immunity only lasts as long as the antibodies humoral immunity - answerproduced by B cells. provides immunity against some viral infections, toxin induced disease, and disease caused by pneumococci, meningococci, and haemophilus cell-mediated immunity - answerproduced by T cells. Immunity is active against cells infected with intracellular bacteria or viruses. Defends against cancer, fungal infections, parasitic infections, tumors, and is responsible for organ transplantation rejection Immune system components - answerbone marrow, thymus, spleen, lymph nodes, tonsils, and peyer patches Bone marrow function in immune system - answerresponsible for production of immune cells and the maturation of B cells EXAM STUDY MATERIALS July 30, 2024 11:26 AM Thymus function in immune system - answerprovides site for T cell differentiation, maturation, and selection spleen function in the immune system - answerlymphoid organ that filters antigens and cells from the blood. where antigen cells present antigens to the lymphocytes which triggers an immune response where antigens interact with immune cells - answertonsils, lymph nodes, and peyer patches T regulatory cells - answerslow or stop immune response once the invader is defeated memory t cells - answerRemember antigen and quickly stimulate immune response on reexposure. they live for many years and reproduce themselves B cells (B lymphocytes) - answergoverns humoral immune response Types of B lymphocyte cells - answerIgA, IgM, IgG, IgE IgA function - answermucous membranes. prevents the attachment of microorganisms to the mucous membranes IgM function - answerproduced early in the primary immune response. a high level of these indicates recent infection elevated early in infection IgG function - answermost prominent immune globulin. binds with bacteria, viruses and toxins. it activates, complement, and binds to macrophages. primary antibody in the secondary immune response. can pass through the placenta elevated later in infection IgE function - answerbinds to mast cells, eosinophils, and basophils. involves in parasitic infections and allergic reactions IgD function - answerfound on the surface of B-lymphocytes and signals B cell activation Antibodies function - answerneutralizes bacterial toxins by coating the bacteria to enhance phagocytosis and antigen antibody complexes which activates the complement cascade Antigen - answersubstance that triggers an immune response self antigens - answerall cells are covered with variety of proteins located on surface that are not antigenic to self, but may be antigenic to others in transfusions or grafts allergen - answera substance that causes an