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18 Cards in this Set
- Front
- Back
Health
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a state of complete physical; mental; and social well-being; not merely the absence of a disease or infirmity.
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Disease
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a deleterious (harmful) change in the bodys condition in response to an environmental factor that could be nutritional; chemical; biological; or psychological.
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Pathogens
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disease causing organisms/agents; these include bacteria and viruses
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Emergent Diseases
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a type of disease never known before or one that has been absent for at least 20 years.
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Antibiotic
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a microbial product or its derivative that kills susceptible microorganisms or inhibits their growth.
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Pesticide
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an agent used to destroy pests
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Hazardous Chemicals
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dangerous chemicals; usually including flammables; explosives; irritants; sensitizers; acids; and caustics).
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Toxic Chemicals (Toxins)
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poisonous chemicals
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Neurotoxins
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attack nerve cells; by attacking the nervous system its disruption of body activities is fast-acting and can be devastating.
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Mutagens
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agents; such as chemicals and radiation; that damage or alter genetic material (DNA) in cells; early in development this can cause birth defects; while later in life this may trigger growth of tumors
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Teratogens
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chemicals or other factors that specifically cause abnormalities during embryonic growth/development; most prevalent teratogen is alcohol
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Cancer
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invasive; out-of-control cell growth that results in malignant tumors.
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Carcinogens
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substances that cause cancer
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Bioaccumulation
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the selective absorption and storage of a great variety of molecules; can be detrimental to organisms if toxins are readily absorbed.
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Biomagnification
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effects of toxins magnified through food webs; occurs when the toxic burden of a large number of organisms at a lower trophic level is accumulated and concentrated by a predator in a higher tropic level.
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LC50/LD50
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(lethal concentration or lethal dose) describes the toxicity of a chemical to which 50% of the test population is killed.
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Acute toxic effects
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caused by a single exposure to a toxin; which results in an immediate health crisis.
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Chronic toxic effects
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long lasting exposure to a toxin.
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