NURSING EXAM QUESTIONS
TOXICOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which statement is the most correct?
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Chemicals manufactured by humans are more dangerous to human health than naturally occurring chemicals.
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Both natural and human-made chemicals are potentially toxic to humans.
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Naturally occurring chemicals are more poisonous to humans than synthetic chemicals.
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None of the above
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Explanation:
Detailed explanation-1: -Both natural and human-made chemicals are potentially toxic to humans. All chemicals, whether natural or synthetic, have the potential to be hazardous to humans. The likelihood of harm to humans depends upon the dose.
Detailed explanation-2: -Routes of Exposure There are four routes by which a substance can enter the body: inhalation, skin (or eye) absorption, ingestion, and injection.
Detailed explanation-3: -But there are many toxic chemicals that occur in nature as well-mercury, snake venom, arsenic, and ricin from castor beans. Some chemicals, like iron and oxygen, are necessary for us to live, but at high doses are toxic and can even cause death.
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