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Lymphatic System (Anatomy (Vessels (skeletal muscle contraction, one way,…

- - - - doesn't allow water through
      - can resist weak acids and bases
    - - mucous traps foreign particles to prevent them entering stomach and lungs
  - - - response to infection or inner pain
        
        stub toe or step on legos
        
        body tissues are damaged
        
        debris clears and starts healing
        
        heat, swelling, pain
    - - fight pathogens by making well being painful/feeling cold
        
        (body thermostat turned up)
    - - cops
        
        1st line of defense
        
        create time for swat to arrive
        
        trigger happy
        
        destroy anything
      - non specific
    - - activated by a virus
- - - - convert to memory cells
        
        2nd exposure to sickness will be easily fought off
        
        unless the virus/pathogen undergoes a mutation
      - sniper's assistant
        
        mark targets for T Cells
  - - - specific
        
        only destroy specific pathogens
      - sniper
        
        hunt and destroy pathogens
      - the more u have the more different pathogens can be fought off
      - T Cells that fail development are destroyed
        
        or else they attack the immune system
        
        leads to auto immune disease like MS