HE 138 Chapter 2 Vocab
Terms
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- Anaphylaxis
- a life-threatening system allergic reaction
- Antigen
- any foreign substance that triggers an immune response
- B-lymphocytes
- lymphocytes of humoral immune response that become plasma cells, antibodies and immunoglobulins, and memory cells for subsequent reactions
- HAART (highly active antiretroviral therapy)
- a combination of several drugs taken in a daily regimen to combat HIV and commonly referred to as a "cocktail" although it is administered in pill form
- Histamine
- substance released by damaged tissue, causes the capillary walls to become more permeable, allows release of plasma and neutrophils
- Leukocyte
- white blood cells involved in phagocytosis, includes neutrophils & polymorphic cells
- Leukocytosis
- an abnormal increase in white blood cells indicating infection or inflammation
- T-lymphocyte
- lymphocytes produced in the thymus responsible for T-cells of the cell-mediated immune response
- Immunity
- the ability of the body to defend itself against infectious agents, foreign cells, and even abnormal body cells
- Nonspecific defense
- effective against any foreign agent, also known as innate immunity
- Specific defense
- effective against particular identified foreign agents, also known as aquired immunity
- Interferon
- a group of substances that stimulate the immune system
- Hyperemia
- increased amount of blood, causes heat and redness of inflammation
- Neutrophils/polymorphs
- leukocytes, specialized cells that defend the body against invading microorganisms and engulf cell debris of injured tissues
- Chemotaxis
- attraction of white blood cells to the site of inflammation
- Inflammatory exudate
- the plasma and white blood cells that escape from the capillaries and cause swelling
- Monocytes/macrophages
- white cells that follow the polymorphs in the process of cleaning debris
- Fibrin
- plasma protein, essetial for the blood-clotting mechanism
- Pyogenic
- bacteria that cause pus formation
- Suppurative
- inflmmation associated with pus formation (abscesses, boils, styes)
- Fibroblasts
- connective tissue cells that close the gap of wounds
- Adhesions
- formed when connective tissues anchor together adjacent structures during healing
- Keloid
- hard, raised scar, really a benign tumor