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bi240 complement
grcc bi240 complement system & chemical mediators
Question | Answer |
---|---|
complement system | Helps body recognize foreign and take action to remove it. |
Complement system activated | during an immune reaction with IgG or IgM |
Complement is made up of a group of | inactive proteins circulating in blood sequence of events (like dominoes) |
The complement system leads to a sequence of events results in | destruction of antigen |
The complement system initiates | inflammatory response |
chemical mediators are involved in | immune reaction and variety of functions |
Chemical mediator: complement | group of inactive proteins in circulation |
when complement is activated it stimulates | release of other chemical mediators |
complement promotes | inflammation, chemotaxis and phagocytosis |
Chemical mediator: histamine | released from mast cells and basophils (esp with allergic reactions) |
histamine causes | vasodilation and increased vascular permeability or edema |
What causes contractions of bronchiolar smooth muscle and pruritis | histamine |
Kinin cause | vasodilation, increase permeability (edema) and pain. |
Prostaglandins | group of lipids |
cause inflammation, vasodilation, and increased permeability and pain | prostaglandins |
Leukotrienes | group of lipids derived from mast cells and basophils. |
Causes contraction of bronchiolar smooth muscle | leukotrienes |
Leuktriene is a chemical mediator | has a role in development of inflammation |
Cytokines are messengers produced by | macrophages and activated t cells |
cytokines stimulate | activation & prolifertaion of b and t cells |
Is the communicator btween cells | cytokines |
cytokines are involved in | inflammation, fever, and leukocytosis |
Tumor necrosis factor (TNF) stimulates | fever, chemotaxis and t cells |
TNF is the mediator in | tissue wasting and septic shock |
Stimulates necrosis in some tumors | TNF |
Chemotactic factors | smoke signal that attracts phagocytes to area of inflamation. |
cytokines | proteins that communicate between cells and regulate tissue growth and development |