Chap 20 and 21 lymphatic and immune system
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Created by:
angiebaby2 on March 20, 2011
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ap anatomy and physiology
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31 terms
Terms | Definitions |
|---|---|
 spleen | lymphatic organ on the left side of the abdomen under the diaphragm |
| thymus | causes T cells to work in immune response; stops growth in adolescence then atrophies. |
| Tonsils | ring of lymphatic tissue around the entrance to the throat |
| Peyer's Patches | Clusters in ileum (distal part) of small intestine that contain macrophages to ingest bacteria |
| Lymph | Protein-containing fluid transported by lymphatic vessels |
| Immunocompetent | Ability of the immune system to recognize specific antigens by binding;reflects the presence of plasma membrane-bound receptors |
| T-cells | Lymphocytes that mediate cellular immunity; include helper, cytotoxic, regulatory, and memory cells. |
| Chemotaxis | movement of a cell, organism, or part of an organism toward or away from a chemical substance |
| Autoimmune Disease | If autoimmunity, production of antibodies and T cells that destroy its own tissues, results in a disease state |
| fever | abnormally high body temperature |
| self-antigen | no foreign or antigenic to oneself but antigenic to others |
| clonal selection | Process during which a B cell or T cell becomes sensitized through binding contact with an antigen |
| booster shot | An additional dose of a vaccine needed periodically to "boost" the immune system. |
| hapten | an incomplete antigen; has reactivity but not immunogenecity |
| phagocytosis | Engulfing of foreign solids by phagocytic cells |
| anaphylactic shock | A life-threatening allergic reaction characterized by a swelling of body tissues including the throat, difficulty in breathing, and a sudden fall in blood pressure. |
| B-cell | oversee humoral immunity; their descendants differentiate into antibody-producing plasma cells |
| Passive immunity | short lived immunity resulting from the introduction of "borrowed antibodies" obtained from an immune animal or human donor; immunological memory is not established |
| sentinel node | The first lymph node ("gland") to receive lymphatic drainage from a tumor. |
| Innate defense | nonspecific defense system |
| allergen | A substance that is foreign to the body and can cause an allergic reaction in certain people |
| diapedesis | passage of white blood cells through intact vessel walls into tissue |
| Cytokines | chemical mediators involved in cellular immunity |
| lysis | destruction or decomposition, as of a cell or other substance, under influence of a specific agent. |
| antigens | a substance or part of a substance that is recognized as foreign by the immune system, activates the immune system, and reacts with immune cells or their products |
| plasma cell | Member of a B cell clone; specialized to produce and release antibodies |
| cloning | is the creation of a genetically identical copy of an existing human or growing cloned tissue from that individual |
| Adaptive immunity | Specific immunity. Responses are customized for specific pathogens, and some memory cells stay around after the infection to speed up future immune responses. |
| antibody | a protein molecule that is released by a plasma cell and that binds specifically to an antigen; an immunoglobulin |
| complement | a group of bloodborne proteins, which, when activated, enhance the inflammatory and immune responses and may lead to cell lysis |
| Cytotoxic | chemicals that are directly toxic to cells, preventing their reproduction or growth. |
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