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Nonspecific host defense that exist before exposure to an antigen involves the anatomic and inflammatory response.
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Innate immunity
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Cells that engulf microorganisms, other cells and foreign particles include neutorphils macrophages and monocytes
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Phagocytic cells
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Factors secreted by certain cells that when activated promote or inhibit a response form another cell or tissue.
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Chemical mediators.
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Increase in the diameter of blood vessels.
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Vasoldilation
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Tissue swelling caused by an increase in fluid from the vasculature(the arrangement of blood vessels in the body or any part of it including their relationship and functions).
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Edema
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Ciruculating granulocyte involved in the early immune response.
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Neutrophil
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Results when immunologic memeory and specificity develop in response to the antigen and involves cell-mediated and humoral responses.
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Acquired immunity
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Leukocytes that mediate humoral or cell-mediated immunity.
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Lymphocytes
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Leukocytes that circulate (monocytes) or are in tissue (machrophages) involved in phagocytosis and antigen presenting.
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Mononuclear phagocytosis
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Cells that process and present antigenic peptides in association with Class II major histocompatability complex (MHC) molecules and activate T cells.
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Antigen-presenting cells.
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Another name for neutrophils
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Polymorphonuclear leukocytes
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Lymphocytes that mature in the thymus and express specific receptors involved in cellular immunity.
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T lymphocytes
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Lymphocytes that mature in the bone marrow differeniate into plasma cells and produce antibodies.
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B lymphocytes
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Adaptive immunity in which B lymphocytes and plasma cells produce specific antibodies that recognize and react with an antigen
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Humoral immunity
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Cell from which differentiated cells divide
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Stem cell
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