Творческая работа

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The drugs - substances of synthetic or natural origin, drugs, plants included in the list of narcotic drugs, psychotropic substances and their precursors subject to control in the Russian Federation in accordance with Russian law and international treaties of the Russian Federation, including the Single Convention on Narcotic of 1961

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Often in medicine and law, the term "drug" use is not quite exact, in the extended sense, to signify illegal drugs are, regardless of their pharmacology . For example, legislation on drug control in Canada, the United States and certain other countries includes cocaine and cannabis, and opioids .

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Classification There is a conventional division into light and heavy drugs. On the origin of psychoactive substances and drugs are divided into vegetable, semi-synthetic (synthesized on the basis of plant material) and synthetic. There is a classification of drugs as a stand-in chemical structure and clinical effect, since and mixed.

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The main effect exerted by drug use on the human body is a drug intoxication, but there are also a number of specific side effects. In particular, they are addictive and addiction as a mental and physical .

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Wine and other alcoholic beverages contain ethanol - one of the earliest known to man of substances that cause addiction. The earliest archaeological finds of vessels for wine date back to 5400-5000 years BC.

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Drug intoxication Drug intoxication - a condition that occurs after drug use, it is seen as subjective and objective symptoms. Subjective symptoms usually manifest themselves as euphoria and in some cases, disorders of perception, in contrast to the surrounding objective symptoms are not registered and can be detected only when misbehavior addict. Depending on the medication for at least

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Virtually all drugs, directly or indirectly aimed at the "reward system" of the brain, increasing to 5-10 times the flow of neurotransmitters such as dopamine and serotonin in the postsynaptic neurons. These neurotransmitters are an important part of the "reward system" of the brain, evoke a sense of pleasure, affect the processes of motivation and learning.

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Amphetamine causes mydriasis.

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The end