Immune Response- Edexcel unit 4
- Created by: Bukky
- Created on: 26-12-12 16:44
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- Immune Response
- Specific
- T helper cells activate B cells
- T helper- release substrates to activate B cells T killer and phagocytes
- B cells are covered in antibodies that bind to antigens forming an antigen -antibody complex
- This along with the substrates released from T helper activates B cells that divide into B memory and plasma
- Phagocytes activate T cells
- Receptors in T cell bind to APC
- When T cell receptor meets complementary antigen it binds
- This activates the T cell and causes it tio differentiate
- When T cell receptor meets complementary antigen it binds
- Receptors in T cell bind to APC
- B effector cells/ Plasma cells make antibodies to specific antigens
- Plasma are b cell clones that secrete antibodies specific to antigen into the blood and antibodies bind to the antigens
- T helper cells activate B cells
- Non-Specific
- inflammation of the site
- Vasodilation, More premeable blood vessels, Morre immune system cells brought to site of infection or infected tissue
- Production of Interferons
- Proteins that help prevent spread of virus to cells not yet infected
- By preventing viral synthesis, Activating specific and non-specific immune responses
- Proteins that help prevent spread of virus to cells not yet infected
- Phagocytosis
- Pathogens
are digested by Macrophages/ Phagocytes, a phagocytic vacuole is formed
- a
lysosome fuses with the phagoytic vacuole and digestive enzymes are released
breaking down the pathogen,
- the Phagocyte becomes an antigen presenting cell APC
- a
lysosome fuses with the phagoytic vacuole and digestive enzymes are released
breaking down the pathogen,
- Pathogens
are digested by Macrophages/ Phagocytes, a phagocytic vacuole is formed
- inflammation of the site
- Specific
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