Drugs - Drugs Intermediate 1 Biology Unit 1 Health and...

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Drugs Intermediate 1 Biology Unit 1 – Health and Technology
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Introduction Humans have used drugs of one sort or another for  thousands of years -wine was used at least from the time of the early  Egyptians  -narcotics from 4000 BC  -medicinal use of marijuana has been dated to 2737BC  in  China
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Types of Drugs-Stimulants Drugs that act on the central nervous system and increase brain activity.  Some give feelings of alertness, greater energy and confidence.  They may also reduce appetite 
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Examples of Stimulants Cocaine   Crack   Ecstasy   Alkyl Nitrites  e.g. poppers Amphetamines   Nicotine  
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Types of Drugs-Depressants Drugs that act on the central nervous system and slow  down brain activity. Impaired co-ordination, balance and judgement are  common.  Higher doses can lead progressively to drowsiness,  vomiting, coma and even death.
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Examples of Depressants Volatile substances or sniffable substances (eg glues, gases, aeroso   Alcohol   Tranquillisers   GHB (Gamma hydroxy-butyrate)  
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Types of Drugs-Hallucinogens Drugs that act to change the way users experience 
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This note was uploaded on 11/23/2011 for the course BIO 100 taught by Professor Robinson during the Fall '08 term at BYU.

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Drugs - Drugs Intermediate 1 Biology Unit 1 Health and...

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