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BIO FINAL FLASHCARDS (C27)
Immune System
20
Biology
10th Grade
06/01/2007

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Term
Actively Acquired Immunity
Definition
Developed as a result of exposure to an antigen
Term
Allergen
Definition
Foreign substances that trigger allergic reactions
Term
Allergy
Definition
Immune system overreaction to antigens
Term
Antibody
Definition
Circulating immune system protein that binds itself to a specific antigen
Term
Antibody Mediated Immunity
Definition
An immune system capability that works thru the production of antibodies
Term
Antigen
Definition
Any substance that triggers an immune system response
Term
Autoimmune disorder
Definition
Attack on the body by the immune system
Term
B-Cells
Definition
Central Cells of Antibody Mediated Immunity
Term
Cell Mediated Immunity
Definition
Immune system capability that creates cells that destroy other cells that have been infected
Term
Cytotoxic T Cells
Definition
Cells that latch onto infected cells and destroy them
Term
Helper T Cells
Definition
Cell that activates both cell and antibody mediated immunity
Term
Histamine
Definition
A substance that brings about blood vessel dilation and increased permeability
Term
immunity
Definition
State of long lasting protection against specific microorganisms
Term
Memory B Cells
Definition
A long lasting B cell that can identify foreign antigens that the body has been previously exposed too
Term
Nonspecific Defenses
Definition
immune system defenders that do not differentiate between one invader and the next
Term
Passively Acquired Immunity
Definition
Gaining of disease fighting substances originally created by another individual.
Term
Phagocyte
Definition
Cell Capable of Ingesting another cell
Term
Plasma Cell
Definition
A B Cell specialized to produce antibodies
Term
Specific defenses
Definition
Protection against particular invaders
Term
T Cell
Definition
Main cells of cell mediated immunity
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