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Types of defense (Antigen-presenting cell (4) Enemy cell broken into small…

- - - - 3) Engulf pathogen forming vesicle- phagosome.
      - 4) Lysosomes fuse with vesicle forming a phagolysosome.
      - 2) Several receptors on cell-surface membranes recoginse, attach to chemicals on surface of pathogen.
      - Lysosomes destroy and ingest bacteria via hydrolysis. Large insoluble molecules into soluble smaller ones.
      - 1) Chemical products of pathogens/dead/damaged/abnormal cells are attractants.
      - Soluble products from hydrolysis absorbed into cytoplasm of phagocyte.
      - Definition
        
        Lymphocytes/ phagocytes engulf pathogen and ingest and destroy pathogen/bacteria before any harm is done.
      - Non specific response
      - If lots of phagocte die a different phogocyte tries phagocytosis and becomes an antigen- presenting cell.
- - - - Non-self material
      - Cancer cells/ abnormal cells.
      - Pathogens
      - Toxins