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18 Cards in this Set
- Front
- Back
Explain the two problems with the lymphatic vessels:
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Immunity is..
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the body's capability to repel foreign substances, pathogens & cancer cells
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how does the immune system keep up healthy?
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by fighting infection & cancer |
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Listed are some cells of the immune system; what do they do? marcophages, mast cells, neutrophils, NKC, lymphocyctes, B cells, plasma cells, memory cells, t cells, cytotoxic cells, t helper cells |
macrophages- eats pathogens, inflammatory response mast cells- release histamine, inflammatory response neutrophils- eats pathogens, inflammatory response NKC- kill virus infected & tumor cells by cell-to-cell contact lymphocytes-specific immunity b cells- produce plasma cells and memory cells plasma cells- produce specific antibodies memory cells- long life cells, may produce new B + T cells t cells- regulate immune response, produce cytotoxic T and helper T cells cytotoxic cells- kill virus infected & cancer cells t helper cells- regulates immunity |
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Red bone marrow function & description
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produces blood cells |
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Thymus function & description |
larger in children, shrinks with age, only about 5% of T cells ever leave the thymus, only the "good fighters" plays role in maturation of T cells |
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Lymph Nodes function & description
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filter lymph + keep is free of antigens + pathogens |
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Spleen function & description
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filters blood |
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The lymphatic system is made up of _______ and _________.
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Lymphatic organs |
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Describe the lymphatic vessels
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transparent vessels of the lymphatic system that return lymph to the circulatory system |
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Explain each nonspecific defense in our immune system -barriers to entry -inflammatory response -complement system (C) natural killer cell (NKC) |
barriers to entry: skin, mucous membranes, hair & cilia inflammatory response: 4 signs-redness, heat, swelling and pain complement system: made of a # of blood plasma proteins, works like a "domino effect" natural killer cell: kill cells that are not recognized as "self" use same methods as T cells to kill cells |
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explain specific defenses & adaptive immunity
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-we become immune when our body learns to destroy a particular antigen -distinguishes "self" from "non-self" -we have lymphocytes for any possible type of antigen |
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explain active and passive immunity
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passive- prepared antibodies not produced by the individual, temporary- no memory cells, only last a few months, newborns receive antibodies from breastfeeding |
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Define: cytotoxic t cells
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responsible for response to virus infected & cancer cells |
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define: allergies
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define: autoimmune diseases |
disease that results when the immune system mistakenly attacks the body's own tissues |
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list 4 ways to be sure you do not become infected with HIV (AIDS)
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and unless you know a person is clean -avoid anal-rectal intercourse -avoid oral sex -don't have unprotected sex (always wear a condom) |
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