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chapter 12 vocab

acid present in skin and vaginal secretions that inhibit bacterial growth
acute hypersensitivity flood of histamines when IgE combines to mast cells
allergens antigen produces abnormal response
allograft tissue graft from unrelated person
antibody protein produced by B cells and attaches to antigens
antigen foreign substance, large molecule no normal in body,provoking response
artificially acquired active immunity vaccine
autograft tissue graft from a different place on one's own body
chemotaxis attraction of phagocytes and WBC to area as result of inflammatory chemicals
cilia sweep dusty mucus toward mouth to prevent it from getting to the lungs
complement lysis microorganisms, enhances phagocytosis by opsonization
fever systemic response caused by pyrogens
gastric juice hydrochloric acid and protein enzymes, destroys things
hilus indented region of lymph node
histamine inflammatory chemical that increases capillary permeability causing swelling
humoral immunity provided by antibodies present in body fluid
IgA baths and protects mucosa
IgE triggers histamine, allergic responses, binds to mast cells and basophils
IgG most abundant, only type that crosses placenta barrier
interferon alerts other non infected cells of invaders, proteins released by viral infected cells
lymph node protects body by removing foreign material, bacteria and tumor cells
lymph capillary microscopic, blind-ended, absorb leaked fluid
lymphokine chemical released by sensitized T cells
MALT tissue acts as sentinel (guard) to protect upper respiratory system and digestive tract
medulla central region of lymph node, contains macrophages
memory cell cell generated during primary immune response and remains in body for long time
monokine chemical such as interlukinI or tumornecrosis factor, produced by macrophages
mucus sticky substance that traps particles in respiratory and digestive tract
natural killer cells contains lysozymes, destroys bacteria
naturally acquired active immunity forms mechanical barrier to prevent pathogens
naturally acquired passive immunity passed from mother to fetus via placenta, also in milk
opsonization cell membranes of become sticky, easier to phagocytize
peyers pathces structures that capture and destroy bacteria to prevent from penetrating intestine
phagocyte cell that engulfs and destroys
plasma cell cell that produces antibodies
pus mixture of dead or dying neutrophils, broken tissue cells, and pathogens
pyrogen chemical secreted by WBC and macrophages causing the body temperature to rise
right lymphatic vessel drains lymph from right arm and right side of head and thorax
sinus dilated channel for lymph
spleen blood resivour
suppressor T cell cells that slow or stop activity of B or T cells
thymus produces hormone (thymosin) and functions in immunity
tonsil traps bacteria of pharynx
trabeculae extensions of capsule extend inward and divide the node into compartments
afferent lymph vessel carries lymph into nodes
Created by: abbiemech