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1/7/2009
Wednesday morning
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| any drug that mimics the action of the neurotransmitter acetylcholine. See cholinergic drug. |
| any chemical substance that affects the functioning of living things and the organisms (such as bacteria, fungi, and protozoans) that infect them. Pharmacology, the science of drugs, deals with all aspects of drugs in medicine, including their mechanism of action, physical and chemical properties, metabolism, and therapeutics and prophylaxis. |
| the excessive, maladaptive, or addictive use of drugs for nonmedical purposes despite social, psychological, and physical problems that may arise from such use. Abused substances include such agents as anabolic steroids, which are used by some athletes to accelerate muscular development and increase strength and which can cause heart disease... |
| Complete and reliable data on the extent of drug abuse in recent years is simply not available. To specify the size and extent of the drug problem, accurate information as to manufacture, distribution, and sale of drugs would be needed. Complete evaluation would also require knowledge of the incidence of habituation and addiction in the... |
| Study of the factors that influence the movement of drugs throughout the body is called pharmacokinetics, which includes the absorption, distribution, localization in tissues, biotransformation, and excretion of drugs. The study of the actions of the drugs and their effects is called pharmacodynamics. Before a drug can be effective, it must be... |
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