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34 y.o. male/ with HIV turned AIDS (Physiology of Immune Sytem (Function…

- - - - Neutrophils, Macrophages and Monocytes, Lymphocytes
  - - - B Cells
    - - T Cells
  - - - Skin
      - Mucous
- - - - Meant to keep invaders out with their secretions (acid, enzymes, mucin) and mechanical barriers,HIV can be spread via blood, semen and vaginal secretions (at the level of the first line of defense)
    - - Phagocytes= neutrophils and macrophages= destroy by phagocytosis, respiratory burst and oposins that coat the pathogen with handls for phagocyte to bind to
      - Natural Killer Cells= "police" the area, can kill cancer and virus infected cells. They are not phagocytic but can kill by direct contact causing apoptosis
  - - - Humoral Immunity= B Cells
        B Cells encounter an antigen and is provoked into responding with immune response. B Cells will bind to the antigen and quickly mulitiply forming clones with the antigen specificity. They will become plasma cells which do the fighting or Memory cells that are ready to mount an immediate response if they encounter same antigen
      - Cellular Immunity= TCells
        when antigens are presented to T lymphocyte they prove immune response that directly kills body cells that are: infected by viruses/bacteria, cancerous, abnormal or foreign cells.
        
        T Cells are either CD4 or CD8
        CD4= helper T cells that activate B Cells, other T Cells or macrophages. They direct the adaptive immune response
        CD8= cytotoxic cells that destroy cells in the body that harbor anything foreign