1. Inflammatory Response
Pathogen
An organism that causes disease
Infectious Disease
A disease caused by the presence of a living thing in the body
Toxin
A poison produced by biological pathogens that damage cells
Inflammatory Response
Part of the body’s defense against pathogens, fluid and white blood cells leak from blood vessels and destroy pathogens
Phagocyte
A white blood cell that destroys pathogens by engulfing them and breaking them down

2. Immune Response Lymphocyte T Cell Antigen B Cell
Part of the body’s defense against pathogens, white cells of the immune system react to pathogens with defense specifically designed to fight it
Lymphocyte
White blood cell that distinguishes between each kind of pathogen
T Cell
A lymphocyte that identifies pathogens and distinguishes one pathogen from another
Antigen
A molecule that the immune system recognizes either as part of the body or as coming from outside of the body
B Cell
A lymphocyte that produces proteins that help destroy pathogens

3. Antibody AIDS HIV Immunity Active Immunity
A protein produced by as B cell of the immune system that destroys pathogens
AIDS
Acquired immunodeficiency syndrome
A disease caused by a virus that attacks the immune system
HIV
Human immunodeficiency virus
The virus that causes AIDS
Immunity
The body’s ability to destroy pathogens before they can cause disease
Active Immunity
Immunity that occurs when a person’s own immune system produces antibodies in response to a pathogen

4. Noninfectious Disease
Vaccination
The process by which harmless antigens are deliberately introduced into a person’s body to produce active immunity
Vaccine
A substance used in a vaccination that consists of a weaken or killed pathogen that can trigger the immune system into action
Antibiotic
A chemical that kills bacteria or slows down their growth rate without harming cells
Passive Immunity
Immunity in which antibodies are given to a person rather than produced in a person’s body
Noninfectious Disease
A disease that is not caused by a pathogen

5. Allergy Allergen Histamine Asthma Insulin
A disorder in which the immune system is overly sensitive to a foreign substance
Allergen
A substance that causes an allergy
Histamine
A chemical that is responsible for the symptoms of an allergy
Asthma
A disorder in which the respiratory passages narrow significantly
Insulin
A chemical produced in the pancreas that enables the body’s cells to take in glucose from the blood and use it for energy

6. Diabetes Tumor Carcinogen
A condition in which either the pancreas fails to produce enough insulin or the body’s cells cannot use it properly
Tumor
An abnormal tissue mass that results from the rapid division of cells
Carcinogen
A substance or factor in the environment that can cause cancer