Exam Review Bio 2
Terms
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- phagocytic white blood cells that engulf bacteria and viruses in infected tissues
- neutrophills and macrophages
- white blood cells, attack viruses, infected body cells, they penetrate the plasma membrane causing them to burst
- natural killer cells
- proteins produced by virus infected body cells, help healthy cells resist viruses
- interferons
- circulate the blood
- complement proteins
- chemical signals that increase blood flow to the damaged area
- prostaglandins
- stimulates a fever which discorages bacterial growth
- pyrogens
- branching network of vessals, lymph nodes, bone marrow, and several other organs
- lymphatic system
- third line of defense
- immune system
- protein found in blood plasma that attaches to one particular antigen and helps counter its affects
- antibody
- foregin substance that elicits an immune response
- antigen
- produces own antibodies for defense
- active immunity
- revieves premade antibodies
- passive immunity
- first exposure of lymphocytes to an antigen
- primary immune response
- antigen is encountered again, memory cells intitiate stronger and faster response
- secondary immune system
- only T cells that kill other cells, they identify infected body cells like helper T cells
- cytotxic T cells
- bind to other white blood cells that have previously encountered an antigen
- Helper T cells
- production of a lineage of genetically identical cells that recognize and attack the specific antigen
- clonal selection
- fight body cells infected wtih pathogens
- cell mediated immunity
- immunity by anti producing B-cells, fights bacteria and viruses in body fluids
- humoral immunity
- type of white blood cell, found mostly in lympathic system, chiefly responsible for immune system
- lymphocytes
- antibodies that casue allergies
- alleigens
- dangerous type of allergic reaction
- anaphylactic shock
- when immune system turns against the bodys own molecules
- autoimmune disease
-
lack one or more components of immune system
can get infected to things that normally wouldn't happen - immuno defiency diseases
- virus attacks helper T-cells, crippling both cell mediated and humoral immunity
- aids