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14 Cards in this Set
- Front
- Back
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Immune system |
Defends body against inside and outside threats |
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Nonspecific immunity |
Bodys reaction to unrecognized body substances |
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Specific immunity |
Bodys reaction to a specific foreign agent. Special cells and substances provide immunity |
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Mechanical barriers |
Intact skin or mucous membranes |
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Chemical barriers |
Tears. stomach acid. Saliva. Perspiration |
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Reflexes |
Cough. Sneeze. Vommit. Diarrhea |
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Phagocytes |
WBC digest and destroy micro organisms |
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Inflammation defence |
Injured tissue. Histamine released. Blood vessels dilate bring more blood to area causing redness and heat. Increases blood flow bring more phagocytes to fight m.organisms |
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Fever defence |
Stimulates Phagocytosis decreases ability of pathogens to multiply |
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Antibodies |
Bodyvsubstance that see abnormal substance and attack and destroys them |
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Antigens |
Unwanted substance in body. Causes body to produce antibodies to attack antigens |
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Lymphocytes |
WBC that produce antibodies. Lymphocyte production increases from response to infection |
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B lymphocytes |
Cells cause production of antibodies that move in plasma |
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T lymphocytes |
Cells destroy invading cells. Killer t cells produce poisonous substance near invading cells. |
