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innate immunity
physical/chemical barriers and guns. recognition of traits shared by broad ranges of pathogens, using a small set of receptors. rapid response TERM 2
acquired immunity
DEFINITION 2 recognition of traits specific to particular pathogens using vast array of receptors. slower response TERM 3
Innate immunity works by?
DEFINITION 3 the immune system recognizes bacteria and fungi by structures on their cell walls TERM 4
Innate immunity in vertebrates
DEFINITION 4 Low pH and lysozyme in the digestive system. Hemocytes in the hemolymph act as phagocytes, secrete antimicrobial peptides.They have an inflammatory response and natural killer cells. TERM 5
innate defense
examples
DEFINITION 5 innate defenses are; barriers (exoskeleton), phagocytosis, antimicrobial peptides.
Physical barriers
skin and mucous membranes TERM 7
Body fluid barriers
DEFINITION 7 saliva, mucus, tears, low pH of skin and the digestive system TERM 8
cellular innate defenses
DEFINITION 8 white blood cells (leukocytes) engulf pathogens in the body. groups of pathogens are recognized by TRLs (toll-like receptors) TERM 9
Inflammatory response
DEFINITION 9 redness, swelling, heat and pain TERM 10
Histamines
DEFINITION 10 organic nitrogenous compound involved in local immune responses as well as regulating physiological function in the gut and acting as a neurotransmitter
antigen receptors
a single B cell or T cell has about 100,000 identical antigen receptors. some B cells are plasma cells that secrete antigen receptors as antibodies. TERM 17
immune response Primary
DEFINITION 17 the first exposure to a specific antigen represents the primary immune response. During this time, effector B cells called plasma cells are generated and T cells are activated to their effector forms. TERM 18
Immune response secondary
DEFINITION 18 memory cells facilitate a faster, more efficient response TERM 19
cell mediated immune response
DEFINITION 19 involves activation and clonal selection of cytotoxic T cells TERM 20
humoral or antibody-mediated immune
response
DEFINITION 20 involves activation and clonal selection of effector B cells (plasma cells) resulting in production of secreted antibodies
humoral immunity
secretion of antibodies of plasma cells TERM 22
Antibody functions
DEFINITION 22 once antibodies bind with an antigen, the antigen is neutralized or destroyed TERM 23
active immunity
DEFINITION 23 is response to an infection it can also develop following immunization TERM 24
passive immunity
DEFINITION 24 provides immediate, short-term protection TERM 25
passive immunity is required by?
DEFINITION 25 it is conferred naturally when IgG crosses the placenta from mother to fetus or when IgA passes from mother to infant in breast milk. It can be conferred artificially by injecting antibodies into a non immune person
