NURSING EXAM QUESTIONS
TOXICOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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the study of poisons
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the study of how drugs interact
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the extent to which a substance is poisonous
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the study of how much of a poison you can take before it kills you
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Detailed explanation-1: -The word “toxicity” describes the degree to which a substance is poisonous or can cause injury. The toxicity depends on a variety of factors: dose, duration and route of exposure (see Module Two), shape and structure of the chemical itself, and individual human factors.
Detailed explanation-2: -Toxicity is defined as the amount or degree of a substance needed to be poisonous (Brooker 2008). Toxicity is dependent on the amount and concentration used, frequency of use, interactions of the person receiving the substance, and individual reaction of the person (Dybing et al 2002; Tisserand & Young 2013).
Detailed explanation-3: -A toxin/toxicant is any chemical that can injure or kill humans, animals or plants; a poison. Toxin is usually used when referring to a toxic substance produced naturally. Toxicant is usually used when referring to a toxic substance that is produced by, or a by-product of, man-made activities.