Immune/Hypersensitivity 3- Mini exam 3 (09/08) Flashcards
exposure to the infectious agent occurs through infection and immunity is acquired
natural active immunity
exposure to the infections agents is injected as a weak or injured antigen (vaccination) and immunity is acquired
passive active immunity
acquired by a child through placenta and breast milk causing temporary immunity
natural passive immunity
injection to suppress symptoms or give temporary immunity
artificial passive immunity
name for type 1 hypersensitivity
allergic reaction
name for type 2 hypersensitivity
cytotoxic hypersensitivity
name for type 3 hypersensitivity
immune complex hypersensitivity
name for type 4 hypersensitivity
cell mediated delayed hypersensitivity
allergic reaction
exposure to allergen produces IgE. These antibodies attach to mast cells which are in connective tissues and release histamine upon activation causing inflammation
presents symptoms like rash, runny and itchy nose etc
cytotoxic hypersensitivity
caused by IgG antibodies reacting with antigen causing destruction of the cell. Seen in improper blood transfusion
immune complex hypersensitivity
antigen and antibody form a complex that is deposited on tissue (often blood vessel walls) which causes inflammation and tissue destruction. Seen in rheumatoid arthritis and glomerulonephritis
cell mediated/delayed hypersensitivity
delayed response of T lymphocytes resulting in a release of lymphokines that cause inflammation and destruction of the antigen. Seen in the TB skin test, also organ transplant rejection
anaphylaxis
a severe response to an allergen in which the symptoms develop quickly, and without help, the patient can die within a few minutes
autoimmune disorder
any of a large group of diseases characterized by a condition in which the immune system produces antibodies against its own tissues
systemic lipid erythematosus
chronic disease of the connective tissue that injures the skin, joints, kidneys, nervous system, and mucous membranes. May produce a characteristic red, scaly butterfly rash across the cheeks and nose
systemic lupis erythematous physiology
characterized by a large number of antibodies circulating defending against DNA, platelets, erythrocytes, nucleic acids and other nucleic materials. treat w prednisone
cell mediated response
cytotoxic (killer) T cells defend against infection in body cells
humoral response
antibodies defend against infection in body fluids
IgG
75% most common, activates complement, antibody activity against toxins, viruses and bacteria, passive immunity in newborns via placental transfer, produced in primary and secondary immune responses
IgA
15% concentrated in bodily secretions such as breastmilk, tears, and saliva
IgM
10% 1st immunoglobulin to proliferate in immune response, bound to B lymphocytes, activates complement
IgD
0.2% bound to and activates B cells
IgE
0.004% bound to mast cells in skin and mucous membranes, stimulates mast cell release of histamine in allergic immune response, leading to inflammation
antigen
foreign substance, microbes or component of the cell that stimulates immune response
antibody
specific protein produced in humoral response to bind with antigen
autoantibody
antibodies against self antigen; attacks body’s own tissues
neutrophils
wbc in inflammatory process (nonspecific)
basophils
wbc that bind to IgE and release histamine
eosinophils
wbc involved in allergic response and defense against pathogens
monocytes
wbc that migrate from blood to tissues and become macrophages
macrophages
performs phagocytosis
mast cells
release chemical mediates such as histamine in connective tissue
B lymphocyte
forms in bone marrow, humoral immunity, activated cell becomes an antibody producing plasma cell or a B memory cell