Please enable JavaScript.

Coggle requires JavaScript to display documents.

Lymphatic & Immune System, Elena Trinh, Period 2 (disorders of the…

- - - - naturally acquired
        
        exposed to a germ
        
        WBC can identify and remember it
      - induced active immunity
        
        vaccinations inject dead viruses so WBC can remember it
    - - naturally acquired
        
        getting antibodies from the mother from breast milk or placenta connection
      - induced passive immunity
        
        inject antibodies
- - - - red: RBC
      - white: lymphoid
  - - - major lymphatic vessels
        
        contain valves for maintaining normal lymph flow
      - small lymphatic vessels
      - lymphatic capillaries
        
        differ from blood capillaries
        
        have larger diameters & thinner walls
        
        endothelial cells overlap
        
        originate as pockets, not as continuous tubes
- - - - helper T cells
        
        signal T & B cells to attack a pathogen
      - suppressor T cells
        
        opposite of helper T cells
        
        stimulate cell division of lymphocytes
      - cytotoxic T cells
        
        destroy virus infected cells directly
      - must be exposed to antigens
      - major histocompatability complex proteins allow body to identify friendly cells vs abnormal cells
        
        present foreign antigens
  - - - activated when they receive stimulation from T helper cells
      - memory B cells
        
        retain memory on how to make a certain antigen
        
        when stimulated, will produce massive amounts of antibodies