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25 Cards in this Set
- Front
- Back
phagocytic white blood cells that engulf bacteria and viruses in infected tissues
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neutrophills and macrophages
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white blood cells, attack viruses, infected body cells, they penetrate the plasma membrane causing them to burst
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natural killer cells
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proteins produced by virus infected body cells, help healthy cells resist viruses
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interferons
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circulate the blood
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complement proteins
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chemical signals that increase blood flow to the damaged area
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prostaglandins
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stimulates a fever which discorages bacterial growth
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pyrogens
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branching network of vessals, lymph nodes, bone marrow, and several other organs
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lymphatic system
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third line of defense
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immune system
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protein found in blood plasma that attaches to one particular antigen and helps counter its affects
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antibody
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foregin substance that elicits an immune response
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antigen
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produces own antibodies for defense
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active immunity
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revieves premade antibodies
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passive immunity
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first exposure of lymphocytes to an antigen
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primary immune response
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antigen is encountered again, memory cells intitiate stronger and faster response
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secondary immune system
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only T cells that kill other cells, they identify infected body cells like helper T cells
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cytotxic T cells
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bind to other white blood cells that have previously encountered an antigen
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Helper T cells
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production of a lineage of genetically identical cells that recognize and attack the specific antigen
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clonal selection
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fight body cells infected wtih pathogens
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cell mediated immunity
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immunity by anti producing B-cells, fights bacteria and viruses in body fluids
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humoral immunity
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type of white blood cell, found mostly in lympathic system, chiefly responsible for immune system
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lymphocytes
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antibodies that casue allergies
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alleigens
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dangerous type of allergic reaction
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anaphylactic shock
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when immune system turns against the bodys own molecules
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autoimmune disease
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lack one or more components of immune system
can get infected to things that normally wouldn't happen |
immuno defiency diseases
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virus attacks helper T-cells, crippling both cell mediated and humoral immunity
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aids
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