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M6 13-005
Exam 14: Immune System (Key Terms)
Term | Definition |
---|---|
Adaptive Immunity | provides a specific reaction to each invading antigen and has the unique ability to remember the antigen that caused the attack. |
Allergen | a substance that can produce a hypersensitive reaction in the body is not necessarily inherently harmful. |
Antigen | a substance recognized by the body as foreign that can trigger an immune response. |
Attenuated | the process of weakening the degree of virulence of a disease organism. |
Autoimmune | pertains to the development of an immune response to one's own tissue. |
Autologous | something that has its origin within an individual, especially a factor present in tissues or fluids. |
Cellular immunity | the mechanism of acquired immunity characterized by the dominant role of small T cells; also called cell-mediated immunity. |
Humoral immunity | one of the two forms of immunity that responds to antigens, such as bacteria and foreign tissue; it is mediated by B cells. |
Hypersensitivity | an abnormal condition characterized by an excessive reaction to a particular stimulus. |
Immunity | the quality of being insusceptible to or unaffected by a particular disease or condition. |
Immunization | a process by which resistance to an infectious disease is induced or increased. |
Immunocompetence | the ability of an immune system to mobilize and deploy its antibodies and other responses to stimulation by an antigen. |
Immunodeficiency | an abnormal condition of the immune system in which cellular or humoral immunity is inadequate and resistance to infection is decreased. |
Immunogen | any agent or substance capable of provoking an immune response or producing immunity. |
Immunology | the study of the immune system. |
Immunosuppressive | the administration of agents that significantly interfere with the ability of the immune system to respond to antigenic stimulation by inhibiting cellular and humoral immunity. |
Immunotherapy | a special treatment of allergic responses; involves the administration of increasingly larger doses of the offending allergens to gradually develop immunity. |
Innate immunity | the body's first line of defense; provides physical and chemical barriers to invading pathogens and protects the body against the external environment. |
Lymphokine | one of the chemical factors produced and released by T cells that attract macrophages to the site of infection or inflammation and prepare them for attack. |
Plasmapheresis | removal of plasma that contains components causing or thought to cause disease. Also called exchange because when the plasma is removed, it is replaced by substitution fluids such as saline or albumin. |
Proliferation | reproduction or multiplication of similar forms. |