30 terms

LIFE SCIENCE CHAPTER 7 LESSONS 1-5 Vocabulary

STUDY
PLAY

Terms in this set (...)

microorganism
a living thing too small to see without a microscope
pathogen
An organism that causes disease
infectious disease
A disease caused by the presence of a living thing in the body that can pass from one organism to another
Toxin
a poison that can harm an organism
Parasite
An organism that benefits by living with, on, or in a host, and harms the host, (in a parasitism interaction)
inflammatory response
Part of the body's defense against pathogens, in which fluid and white blood cells leak from blood vessels into tissues and destroy pathogens by breaking them down
phagocyte
A white blood cell that destroys pathogens by engulfing them and breaking them down
immune response
Part of the body's defense against pathogens in which cells of the immune system react to each kind of pathogen with a defense targeted specifically at that pathogen
lymphocyte
A 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 the body
B cell
A lymphocyte that produces proteins that help destroy pathogens
Antibody
A protein produced by a B cell of the immune system that destroys pathogens
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 the presence of a pathogen
vaccination
The process by which harmless antigens are deliberately introduced into a person's body to produce active immunity; also called immunization
vaccine
a substance used in a vaccination that consists of pathogens that have been weakened or killed but can still trigger the body to produce chemicals that destroy the pathogens
passive immunity
Immunity in which antibodies are given to a person rather than produced within the person's own body
antibiotic
A chemical that kills bacteria or slows their growth without harming body cells
noninfectious disease
A disease that is not caused by a pathogen
allergy
A reaction caused when the immune system is overly sensitive to a foreign substance
allergen
any substance that causes an allergy
histamine
A chemical that is responsible for the symptoms of an allergy
asthma
a disease in which the airways in the lungs narrow significantly
insulin
A hormone produced in the pancreas that enables the body's cells to take in glucose from the blood and use it for energy
diabetes
A condition in which the pancreas fails to produce enough insulin, or the body's cells cannot use it properly
tumor
A mass of rapidly dividing cells that can damage surrounding tissue
carcinogen
A substance or a factor in the environment that can cause cancer
"AIDS" (for "Acquired Immuno Deficiency Syndrome")
A disease caused by a virus that attacks the immune system
"HIV" (for "Human Immunodeficiency Virus")
The virus that causes "AIDS"
YOU MIGHT ALSO LIKE...
STUDY GUIDE