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Unit 5-5 Notes Mr. Hefti – Pulaski Biology Type of cell Function Macrophage Ingests pathogens Neutrophil Engulfs / destroys pathogens Location Spleen, lungs, blood Bloodstream Natural killer Punctures infected cells cell Helper T cell Activates B cells and Cytotoxic T cells Cytotoxic T Punctures infected cells cell B cell Forms plasma cells Infected cells Plasma cell Bloodstream Releases antibodies Memory cell Protects against defeated pathogens Bloodstream Infection sites Infection sites Bloodstream 1. 2. 3. 4. 5. Antigen triggers IR Macrophage “swallows” pathogen Helper T and B cells activated Antibodies bind to antigen marking cell for destruction Cytotoxic T destroys marked cells Virus Viral antigen Macrophage Viral antigen Receptor proteins Helper T cell B cell Cytotoxic T cell Plasma cell Infected body cells Viral antigen Antibodies Antibody Receptor protein Viruses Immune system exposed to weakened or harmless version of pathogen Antibody production stimulated prior to actual exposure BBC video clip Type of cell Function Macrophage Neutrophil Spleen, lungs, blood Engulfs / destroys pathogens Punctures infected cells Helper T cell B cell Function Macrophage Location Engulfs / destroys pathogens Spleen, lungs, blood Engulfs / destroys pathogens Punctures infected cells Infected cells Activates B cells and Cytotoxic T cells Bloodstream Punctures infected cells Infection sites Forms plasma cells Protects against defeated pathogens Type of cell Infected cells Helper T cell Infection sites Forms plasma cells B cell Plasma cell Function Macrophage Neutrophil Activates B cells and Cytotoxic T Bloodstream cells Punctures infected cells B cell Bloodstream Spleen, lungs, blood Punctures infected cells Helper T cell Location Plasma cell Protects against defeated pathogens Neutrophil Helper T cell Infection sites Forms plasma cells Function Macrophage Infected cells Plasma cell Type of cell Type of cell Neutrophil Activates B cells and Cytotoxic T Bloodstream cells Punctures infected cells B cell Location Bloodstream Location Spleen, lungs, blood Engulfs / destroys pathogens Punctures infected cells Infected cells Activates B cells and Cytotoxic T cells Bloodstream Punctures infected cells Infection sites Forms plasma cells Plasma cell Protects against defeated pathogens Bloodstream Protects against defeated pathogens Bloodstream
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