Inflammation Flashcards
Basophils
Blue-staining granulocytes that carry an IgE receptor and contain cytoplasmic granules filled with biologically active enzymes and cytokines that mediate the inflammatory process.
Chronic Inflammation
Inflammation of more than two weeks duration characterized by the presence of mononuclear cells and often associate with endogenous infectious agents such as viruses or intracellular bacteria or the presence of a foreign body.
Edema
Swelling of tissue.
Eosinophils
Red-staining granulocytes that contain biologically active proteins and enzymes that mediate defense against parasitic infections. Eosinophils also produce cytokines that down-regulate the inflammatory response, remodel extracellular matrix during tissue healing, and mediate many adverse responses during asthmatic attacks and allergic reactions to pharmaceuticals.
Erythema
Redness of the skin associated with inflammation.
Granulocytes
A major group of white blood cells that have irregular, lobed nuclei and granules in their cytoplasm.
Granulomas
Areas of tissue damage caused by chronic inflammation characterized by large areas of tissue destruction surrounded by fibrous elements of extracellular matrix and the presence of large, bizarre inflammatory cells.
Inflammation
The localized election that occurs in tissue in response to an infection of physical or chemical injury.
Leukocytes
White blood cells.
Lymphocytes
A subgroup of mononuclear cells that includes the T and B cells that mediate acquired immune reactions.
Mast Cells
Cells that are similar to basophils in form and function that originate in the bone marrow and migrate to connective tissue surrounding blood vessels.
Monocytes
A subgroup of mononuclear cells that are called monocytes when they are on the bloodstream and macrophages when they are in tissues. These cells are the APC’s that mediate endocytosis and presentation of antigen to T and B cells during immune reactions.
Mononuclear Cells
A major group of white blood cells that have round non-segmented nuclei and smooth cytoplasm.
Neutrophils
Non-staining granulocytes that contain digestive endoscopes and are the principal mediators of phagocytosis in acute inflammation.
Permeability
A porous condition or state of cells or tissues that allows liquids to pass through them.