Immunity Flashcards
(32 cards)
Examples of external barriers.
Skin, mucous membranes, lining of the GI tract, lining of the urinary tract, secretions
How does the skin protect us?
Sweat, hair, oil glands
Examples of mucous membrane barriers.
Eyes,close, mouth, urethra, colon
Examples of non specific immunity?
Physical barriers, chemical barriers, species specific immunity, inflammation
Series of steps for inflammation.
Inflammatory cascade
What happens during inflammation?
Cells release chemical mediators which attract cells to the area, dilate blood vessels and increase vessel permeability
Produced by cells when viruses are present?
Interferon
Produced by cells with infection or inflammation?
Complement
Four characteristics of inflammation?
Heat, redness, swelling, pain
What is found in mast cell granules?
Histamines
The body attacking a specific organism.
Specific immunity
Two arms of specific immunity?
Humoral, cell mediated
What happens during cell mediated immunity?
White blood cells
What do T cells do?
Float around looking for cells without surface markers (antigens) that signal the body that they belong there
Active In tissues which activate anti inflammatory functions.
Macrophages
What happens during macrophage Immunity?
Can phagocytose if small enough
Antibody production stimulated by an antigen (b-cell response).
Humoral immunity
Where are B cells found?
Bone marrow, spleen, lymph nodes
Serve as memory for our immune system?
B cells
Same thing as antibodies.
Immunoglobulin
Types of antibodies.
A, M, D, E, G
How is an antibody shape?
Y shaped with a constant region (handle) and a variable region (arms)
Born with cells already recognizing pathogen.
Inherited
Cells are presented with pathogen to make antibodies and form memory.
Acquired
