Immune System Flashcards
granular leukocytes an dphagocytic cells
attack infectious agents
natural killer cells attack
virus infected and tumor cells
cytokines
variety of types from a variety of cells that enhance immune response nonspecifically
complement system
plasma proteins that can lyse microorganisms and stimulate phagocytic cells
5 things of specific immunity
specificity diversity memory self limitation tolerance
where do immunoglobulins come from
b cells
where do lymphokines come from
t cells
MHC1
on all nucleated body cells
MHC2
on antigen presenting cells
MHC2 use
antigen presenting cells put MHC2 onto partially digested foreign proteins so T cells can recognize them and neutralize them
types of antigen presenting cells
macorphages
langerhan cells
thyme epithelial reticular cells
dendritic cells
helper t cell
recognizes and binds antigen-MHCII complexes on antigen presenting cells
help to stimulate b cell differntiation
cytotoxic t cells
recognize abnormal MHC1 on transformed cells and release perforins to cause membrane damage or activate apoptosis genes
suppressor t cells
decrease b and t cell activity
memory t cells
specific receptors for a specific antigen
