Term
| Functions of lymphatic system |
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Definition
1. Drainage system to transport fluid back into the blood vessels to heart.
2. absorbs lipids from small intestine and transport them into the blood stream.
3.Defends body against pathogenic organisms/foreign substances: monocytes, lymphocytes, antigens, antibodies |
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Definition
| “tissue fluid”; fluid in between cells; similar to lymph. |
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| specialized lymphatic organs |
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Definition
1. Lymph Nodes
2. Thymus
3. Spleen
4. Tonsils |
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Definition
| a substance that can induce a state of sensitivity or immune responsiveness (after a latent period) when it comes into contact with the appropriate cells in body. |
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| an immunoglobulin molecule produced by B lymphocytes that reacts specifically with an antigen. |
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Definition
1. hypersensitivity--excessive immune reaction to a particular stimulus--allergen.
2. acquired immunodeficiency syndrome
3. autoimmune disorders |
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Definition
1. active--infection, vaccination
2. passive--transfer of maternal antibodies, antitoxins, immunoglobulins |
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| genetic predisposition present in body at birth; not dependent on a specific antigen or previous contact with antigen. |
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| antibodies are produced in laboratory--e.g. tumor therapy |
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Definition
| acts directly on antigen (killer T cells); secretes substances such as interferons and interleukins that aid other cells in destroying antigens. |
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Definition
| stimulates production of antibodies by B cells and cytokines by cytotoxic T cells |
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| inhibit/control B and T cell activity |
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Definition
| macrophage (phagocyte) ingests antigen, and "presents" it on its surface to get antigen-fighting activity in T cells. |
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Definition
1. produce antibodies in response to specific antigens
2. transforms into plasma cell in response to specific antigen
3. produces antibodies called immunoglobulins--IgA, IgD, IgE (allergic reactions), IgG (crosses placenta) |
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Definition
1. old erythrocytes are destroyed by macrophages and hemoglobin converted to bilirubin and goes into blood
2. filters micro-organisms, other foreigh materials
3. activates lymphocytes by antigens filtered from blood. Activated B lymphocytes produce antibodies
4. stores blood--especially erythrocytes, platelets |
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Definition
1. Prepares cells to make antibodies.
2. Cells "learn" to recognize "self" antigens. (Failure to recognize "self" = autoimmune disease.) |
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| stationary lymphatic tissues produce lymphocytes, trap substances from inflammation, foreign bodes, cancer cells, et cetera. |
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