Immune System Cells
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IMMUNE SYSTEM CELLS Unit 5-5 Notes Mr. Hefti – Pulaski Biology
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Immune System Cells. Unit 5-5 Notes Mr. Hefti – Pulaski Biology. Blood Review. Immune response steps…. 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. - PowerPoint PPT Presentation
Transcript of Immune System Cells
IMMUNE SYSTEM CELLS
Unit 5-5 NotesMr. Hefti – Pulaski Biology
Blood Review
Type of cell Function Location
Macrophage Ingests pathogens Spleen, lungs, blood
Neutrophil Engulfs / destroys pathogens Bloodstream
Natural killer cell
Punctures infected cells Infected cells
Helper T cell Activates B cells and Cytotoxic T cells
Bloodstream
Cytotoxic T cell
Punctures infected cells Infection sites
B cell Forms plasma cells Infection sites
Plasma cell Releases antibodies Bloodstream
Memory cell Protects against defeated pathogens
Bloodstream
Immune response steps…1. Antigen triggers IR2. Macrophage “swallows”
pathogen3. Helper T and B cells
activated4. Antibodies bind to antigen
marking cell for destruction5. Cytotoxic T destroys marked
cells
Refer to
Tiger p. 936 to
label!
Virus
Viral antigen
Macrophage
Viral antigen
Helper T cellReceptor
proteins
Cytotoxic T cell
B cell
Plasma cell
Infected body cells
Antibodies
Viruses
Viral antigen
Receptor proteinAntibody
How do vaccines work? Immune system exposed to
weakened or harmless version of pathogen
Antibody production stimulated prior to actual exposure
BBC video clip
Type of cell Function Location
Macrophage Spleen, lungs, blood
Neutrophil Engulfs / destroys pathogens
Punctures infected cells Infected cells
Helper T cell Activates B cells and Cytotoxic T cells
Bloodstream
Punctures infected cells Infection sites
B cell Forms plasma cells
Plasma cell
Protects against defeated pathogens
Bloodstream
Type of cell Function Location
Macrophage Spleen, lungs, blood
Neutrophil Engulfs / destroys pathogens
Punctures infected cells Infected cells
Helper T cell Activates B cells and Cytotoxic T cells
Bloodstream
Punctures infected cells Infection sites
B cell Forms plasma cells
Plasma cell
Protects against defeated pathogens
Bloodstream
Type of cell Function Location
Macrophage Spleen, lungs, blood
Neutrophil Engulfs / destroys pathogens
Punctures infected cells Infected cells
Helper T cell Activates B cells and Cytotoxic T cells
Bloodstream
Punctures infected cells Infection sites
B cell Forms plasma cells
Plasma cell
Protects against defeated pathogens
Bloodstream
Type of cell Function Location
Macrophage Spleen, lungs, blood
Neutrophil Engulfs / destroys pathogens
Punctures infected cells Infected cells
Helper T cell Activates B cells and Cytotoxic T cells
Bloodstream
Punctures infected cells Infection sites
B cell Forms plasma cells
Plasma cell
Protects against defeated pathogens
Bloodstream
