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Disease
Chapter 14 Vocabulary
Term | Definition |
---|---|
disease | any abnormal condition that causes illness in a living organism |
pathogen | an organism or particle that causes disease |
infectious disease | a contagious disease caused by pathogens |
noninfectious disease | a disease that is not caused by pathogens and is not contagious |
acute | beginning suddenly and lasting for a short time |
chronic | lasting for a long time and/or recurring frequently |
virus | a tiny, nonliving particle that can infect cells and cause disease |
genetic disorder | an abnormal condition that is usually inherited through genes |
allergy | an abnormal reaction to a foreign substance |
allergen | a substance that provokes allergies |
lymph nodes | a rounded mass of tissue that filters fluids from other body tissues and traps pathogens |
immune response | the series of reactions that take place when white blood cells fight against infection |
immunity | the body's ability to protect itself from pathogens before they cause disease |