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16 Cards in this Set
- Front
- Back
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Lysozyme
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enzyme that digests cell walls of many bacteria and destroys microes entering upper respiratory system and openings around the eyes
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Phagocytosis
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ingestion of invading particles by certain types of white blood cells
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Neutrophils
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phagocytic cells that comprise about 60-70 percent of allow white blood cells
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Basophils
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white cells contain histamine, and mast cells contain histamine as well. Injury to these cells releases histamine which triggers vasodilation and makes capillaries leakier
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Key festures of Immune system
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-specificity
-diversity -memory -sel/nonself recognition |
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epitope
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the localized region on surface of an antigen through which antibodies recognize antigens
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How antibodies work
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-Neutralization
-Agglutination -Antigen-Antibody Complexes |
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perforin
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a protein that form lesion in infected cell's membrane
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Opsonization
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complement proteins attach to foreign cells and stimulate phagocytes to ingest those cells
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Immune system's capacity to distinguish self from nonself is
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critical in blood transfusion and transplantation
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ABO blood groups
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allow for self recognation of blood; can identify is placed in body of another individual
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Autoimmune disease
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immune system reacts against itself
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Allergy
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hypersensitivity of body's defenses to environmental antigens called allergens.
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Anaphylactic shock
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when mast cell degranulationtriggers dilation of peripheral blood vessels and casues precipitous drop in blood pressure
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Immunodeficiency
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condition where individual is deficient in humoral or cell-mediated immune defences
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T dependent
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slower, more efficient, creates memory cells
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