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26 Cards in this Set
- Front
- Back
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cervical lymph nodes
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drain lymph from head and neck
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auxilliary lymph nodes
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drain lymph from shoulders, breasts, armpits.
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inguinal lymph nodes
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drain lymph from groin
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mechanical barriers
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intact skin, mucous membrains (1st line of defence)
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chemical barriers
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tears, saliva, perspiration, stomach acid (1st line of defence)
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reflexes
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cough, sneeze, vomiting, diarrhea (1st line of defence)
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nonspecific immunity
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bodys reaction to anything it does not recognize as normal body substance. two lines of defence
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phagocytes
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WBC that digest and destroy microorganisms (2nd line of defence)
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inflammation
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when tissues are injured, histamine is released (anti-inflammatory) blood vessels dialate and bring more blood to area -> redness, heat & WBC. (2nd line of defence)
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Fever
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stimulates phagocytosis and decreases the ability of certain pathogens to multiply. (2nd line of defence)
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specific immunity
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bodys response to a SPECIFIC FOREIGN SUBSTANCE that may be harmful or unwanted.
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antibodies
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recognize abnormal or unwanted substances. attack and destroy such substances.
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antigens
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abnormal substance. causes body to produce antibodies which attack and destroy antigens.
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lymphocytes
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WBC that produce antibodies. act against bacteria & viruses.
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immunity vs. artificially acquired immunity
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immunity -> bodys natural way of getting antibodies. artificial -> vaccination way of body getting antibodies (may need booster shot)
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cancer
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uncontrolled growth of new cells and tissue.
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tumor
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lump of abnormal new cell growth, out of control cell division & growth
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benign
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non cancerous, slow growing, one area
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malignant
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cancerous, rapid growth, invasion (roots)
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metastasis
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spread cancer to other body parts. cancer cells break off from tumor and travel to other body parts.
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carcinogenic
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cancer causing
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risk factors -> cancer
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family history, smoking, alcohol, high fat high calorie low fiber diet, sun exposure, hormones, viruses
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cancer treatments
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surgery, radiation, chemotherapy
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Acquired Immune Deficiency Syndrome (AIDS)
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caused by human immunodeficiency virus (HIV) attacks the immune system and interferes with bodys ability to fight infections.
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B cells
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cause production of antibodies. circulate in plasma.
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T cells
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destroy invaiders. attract other cells to destroy invaiders.
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