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Anatomy
chapter 12 vocab
| Term | Definition |
|---|---|
| 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
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