Week 9 - Adaptive Immunity Flashcards
Adaptive Immunity Diagram
What are the 2 types of adaptive immunity?
- Antibody Mediated (humoral)
- Cell Mediated
What occurs in antibody mediated adaptive immunity?
- B-Lymphocytes produce antibodies and with the help of T Lymphocytes, generate interactions for antibodies to neutralize, eliminate, or destroy foreign antigens
What is antibody mediated immunity responsible for?
- body’s response to invading bacteria and viruses
Which cells are involved in the humoral response? (2)
- Plasma and Memory B cells
Antibody Mediated Process diagram*
What are the antibodies/immunoglobulins secreted by B Lymphocytes? (5)
- IgG
- IgD
- IgM
- IgA
- IgE
What is IgG? (2)
- largest amount of circulating antibodies
- heavily expressed on 2nd+ exposure to antigen
What is IgD?
- Acts as a B-cell antigen receptor
What is IgM?
- FIRST antibody produced from plasma cell with 1st exposure/immune response
If low exposure or tested too early
What is IgA? (2)
- Secretory antibody that is present in high concentrations in the secretions of mucous membranes and the intestinal mucosa
- Prevents infection in the upper and lower respiratory tracts, GI tract, and GU tract
Basically traps foreign materials
What is IgE? (2)
- Associated with hypersensitivity reactions
- forms a receptor on masts cells ana basophils and triggers histamine release during allergic reactions
So it attaches to mast cells on 2nd exposure, where mast cells release proinflammatory action
Which cells are included for cellular mediated immunity? (5)
- T-lymphocytes
- Cytotoxic T cells
- Helper T cells
- Regulatory T cells
- Natural Killers
What do T cells do?
- major role in regulating antibody mediated immunity and innate immunity
What do cytotoxic T cells do?
- Destroy self cells infected by parasites