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Health Chapter 13
Vocabulary
15
Other
9th Grade
04/19/2010

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Term
infectious disease
Definition
any disease that is caused by an agent that has invaded the body
Term
pathogen
Definition
any agent that causes disease
Term
bacteria
Definition
tiny, single-celled organisms, some of which can cause disease
Term
virus
Definition
a tiny disease-causing particle that consists of genetic material and a protein coat
Term
fungus
Definition
an organism that absorbs and uses nutrients of living or dead organisms
Term
antibiotic resistance
Definition
a condition in which bacteria can no longer be killed by a particular antibiotic
Term
inflammation
Definition
a reaction to injury or infection that is characterized by pain, redness, and swelling
Term
lymphatic system
Definition
a network of vessels that carry a clear fluid called lymph through the body
Term
white blood cell
Definition
a blood cell whose primary job is to defend the body against disease
Term
vaccine
Definition
a substance usually prepared from killed or weakend pathogens or from genetic material and that is introduced into a body to produce immunity
Term
symptom
Definition
a change that a person notices in his or her body or mind and that is caused by a disease of disorder
Term
meningitis
Definition
an inflammation of the membranes covering the brain and spinal cord
Term
salmonellosis
Definition
a bacterial infection of the digestive system, usually spread by eating contaminated food
Term
hepatitis
Definition
an inflammation of the liver
Term
amebic dysentery
Definition
an inflammation of the intestine caused by an ameba
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