BIOLOGY IN HUMAN WELFARE
HUMAN HEALTH AND DISEASE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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if it was produced naturally
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its scientific name
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how much you are exposed to
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where it is found in the environment
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Detailed explanation-1: -The toxicity of a substance depends on three factors: its chemical structure, the extent to which the substance is absorbed by the body, and the body’s ability to detoxify the substance (change it into less toxic substances) and eliminate it from the body. Are “toxic” and “hazardous” the same?
Detailed explanation-2: -Routes of Exposure. Natural barriers impede the intake and distribution of material once in the body. These barriers can attenuate the toxic effects of the same dose of a chemical. The effectiveness of these barriers is partially dependent upon the route of entry of the chemical.
Detailed explanation-3: -The different ways a person can come into contact with hazardous chemicals are called exposure pathways. There are three basic exposure pathways: inhalation, ingestion, and skin contact. Inhalation is breathing or inhaling into the lungs. Ingestion is taking something in by mouth.