Specific immunity 0.0 / 5 ? BiologyHealth, illness and diseaseA2/A-levelEdexcel Created by: francesca_321Created on: 01-01-16 14:20 What is involved in specific immunity? B and T lymphocytes 1 of 19 What is the body infected by? bacterium with specific antigens on surface 2 of 19 What is the process called that happens here? phagocytosis 3 of 19 hat happens to the antigen from bacterium? they are inserted in membranes on MHC proteins, 4 of 19 What do these become? antigen presenting cells 5 of 19 What do T helper cells bind to? the antigen 6 of 19 then what do they do? divide to become a clone of active T helper cells and memory cells 7 of 19 What do the B cells do? they engulf bacterium 8 of 19 where is the antigen inserted to? the membrane 9 of 19 What do T helper cells bind to ? B cells displaying the same antigen and release cytokines 10 of 19 What do cytokines stimulate? activated B effector cells to divide to produce clone of plasma cells and memory cells 11 of 19 What do plasma cells produce? antibodies 12 of 19 The Production of T cells The production of T cells 13 of 19 What do infected cells have on their surface? pathogen antigens 14 of 19 What do T killer cells do? use complimentary receptors to bind to these antigens 15 of 19 What happens to T cells? They become active T killer cells 16 of 19 What do cytokines from T helper cells stimulate? to divide to produce a clone of active T killer cells which increases the number of cells to fight the infection 17 of 19 What do these T killer cells bind to? antigens on the surface of the infected ell and release chemicals which either cause the infected cell to self destruct or swell and burst 18 of 19 What do T and B memory cells do? ensure the immune system can deal with any reinfection by the same pathogens 19 of 19
Comments
No comments have yet been made