| Term | Definition |
|---|
| Immunity | The body's ability to respond to the presence of a foreign substance by producing antibodies to destroy invaders, or by directly attacking invaders |
| Antigen | Any foreign substance that enters the body and triggers an immune response |
| Pathogen | An antigen that is disease causing |
| Resistance | The body's ability to fight off disease |
| Suceptibility | A lack of resistance to a disease |
| Nonspecific resistance | General defenses that respond to a wide variety of foreign invaders; present throughout lifetime |
| Specif resistance | Defenses that are developed against specific foreign invaders |
| Natural killer cells | Group of lymphocytes located in the blood, spleen, lymph nodes, and red bone marrow; attacks and kills a wide variety of pathogens (cytolysis) |
| Phagocytes | Cells that perform phagocytosis (ingestion of a microbe) |
| Neutrophils | The most abundant type of WBCs in the immune system |
| Monocytes | Phagocytic cells that become macrophages (large phagocytes) |
| Chemotaxis | Chemically attracted to foreign invaders or site of infection |
| Adherence | When a phagocyte attaches to a microbe |
| Ingestion | Engulfs or surround the microbe after adherence |
| Digestion | Following ingestion, digestive enzymes breakdown a microbe, killing it |
Combine with other sets
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