Immune System Tissues
- Bone Marrow
- B Cells and T Cells Formed
- B Cells Mature
- Thymus
- T Cells Tested For Self-Response
- T Cells Mature
- Lymph Nodes
- Mature B Cells and T Cells Monitor Lymph For Pathogens
- Spleen
- Mature B Cells and T Cells Monitor Blood For Pathogens
Innate Immunity Barriers
- Skin Protects Against Pathogens
- Normal Flora Outcompete Pathogens
- Lysozyme in Saliva, Tears, and Mucus
- Mucous Traps Pathogens
- Cilia Remove Mucus
- Acid and Digestive Enzymes in the Stomach Kill Pathogens
Inflammatory Response
- Pathogens Infect Tissue
- Mast Cells Release Histamine
- Histamine Dilates and Increases Capillary Permeability
- Macrophages Engulf Pathogens
- Macrophage Signals Cells With Cytokines
- Responding Neutrophils Cross Capillary Wall
- B And T Lymphocytes Arrive At Injury Site
Humoral Adaptive Immunity
- B Cell Binds Free Floating Antigen
- B Cell Presents Antigen to Helper T Cell
- Helper T Cells Help B Cells Develop Antigen Specificity
- Plasma B Cells Secrete Antibodies
- Memory B Cells Cause Faster Secondary Response
Innate Immunity Cellular Response
- Natural Killer Lymphocytes Attack Abnormal Cells
- Neutrophils in Blood
- Infected Cells Release Interferon
- Complement Proteins Lyse Pathogens/Infected Cells
- Dendritic Cells in Tissue
- Macrophages in Tissue
Cell-mediated Adaptive Immune Response
- Macrophages and Dendritic Cells Present Antigens
- T Cell Develops Antigen Specificity
- Regulatory T Cells Suppress Response
- Memory T Cells Cause Faster Secondary Response
- Cytotoxic T Cells Lyse Infected Cells
- Infected Cells Present Antigen On Surface