ASCP MLS Immunology and Serology questions with correct answers

What is the difference between active and passive immunities ? - Answer Active- individual produces antibody following immunization or infection. Active has memory and is lasting Passive- antibody is transferred to the individual (gamma globulin injections or placental transfer) but does not last due no memory What is innate immunity? - Answer Innate immunity a natural immunity that is non-specific and has no memory such as natural killer cells, phagocytosis, exogenous factors like skin and endogenous like stomach acid. What is adaptive immunity? - Answer Adaptive immunity is acquired. It is specific and has memory. It includes T cells (cytokines) and B cells (antibodies) What type of cell produces cellular immunity? - Answer T cells What is cellular immunity? - Answer Immunity produced by t cells and lymphokines as a primary defense against viral/fungal infections (Intracellular organisms). It also includes hypersensitivity IV (delayed which also includes transplant rejection) What is humoral immunity? - Answer Immunity produced by the B cell or plasma cells that creates antibodies. It is a defense against bacterial infections (extracellular organisms) and includes hypersensitivity type I, II, III. Antibody function of IgG - Answer Greatest in plasma concentration (approximately 70%) Goes across the placenta