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Transcript
Drugs Intermediate 1 Biology Unit 1 – Health and Technology 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 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 Examples of Stimulants • • • • • • Cocaine Crack Ecstasy Alkyl Nitrites e.g. poppers Amphetamines Nicotine 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. Examples of Depressants • Volatile substances or sniffable substances (eg glues, gases, aerosols) • Alcohol • Tranquillisers • GHB (Gamma hydroxy-butyrate) Types of Drugs-Hallucinogens • Drugs that act to change the way users experience the world through the five senses. • Sometimes this involves seeing, and hearing things which aren't there. Examples of Hallucinogens • Cannabis • LSD • Magic mushrooms • Ketamine Types of Drugs - Analgesics • Drugs that have a painkilling effect. e.g. -heroin -opium -morphine Types of Drugs – Anabolic Steroids • Drugs that promote muscle growth and increase lean body mass. • These drugs mostly have legitimate medical uses • They are often misused by those wishing to enhance their athletic performance or strength. Statistics • The following statistics are from the results of a major national survey of secondary schoolchildren aged 11-15 published by the Department of Health (DH) in 2002. • 12% of pupils had used illegal drugs in the last month and 20% had used illegal drugs in the last year • 13% of boys reported taking drugs in the last month compared to 11% of girls • Use increased with age. Six percent of 11-year-olds had used drugs in the last year compared to 39% of 15-year-olds Cannabis is the most likely drug to have been used, with 13% of pupils reporting use in the last year. Cannabis use also increases sharply with age with 1% of 11-year-olds having used the drug in past year compared with 31% of 15-yearolds Class A drugs had been used by 4% of 11-15 year olds. One percent say they used heroin or cocaine Risks of Using Drugs • Risks vary according to: -circumstances of the use -the motivation and knowledge level of the user -their mood and expectation at the time of use -the manner of use -size of dose -purity of the sample Risks Factors Involved in Drug Taking • Users can never be sure of exactly what they are taking • Not knowing the strength of what has been bought could lead to an accidental overdose (which may be life-threatening) • Users can't be precisely sure of the effect the drug will have, even if they have taken it before. • Sharing dirty needles or syringes carries a risk of serious infections • Mixing drugs, or drugs with alcohol • Getting a criminal record. • Effects on relationships, financial pressures, reducing judgement or performance etc. Class A Drugs • Amphetamines (speed) - if prepared for injection • Cocaine and crack • Ecstasy • Heroin • LSD (acid) • Magic mushrooms - if prepared for use. Possession of Class A Drugs • Possession: -seven years prison and/or a fine • Possession with intent to supply -life imprisonment and/or a fine Class B Drugs • Amphetamines (speed) • Possession -five years prison and/or a fine • Possession with intent to supply -14 years prison and/or a fine Class C Drugs • • • • • Anabolic steroids Cannabis Mild amphetamines GBH Tranquillisers DF 118 (painkillers) Possession of Class C Drugs • Possession -two years prison and/or a fine • Possession with intent to supply -14 years prison and/or a fine Useful Websites • http://www.mindbodysoul.gov.uk/drugs/dru gmenu.html • http://www.sorted4.info/html/400/430.ht ml • http://www.stonerlemmings.com • http://www.lifebytes.gov.uk/drugs/drugs _facts.html This powerpoint was kindly donated to www.worldofteaching.com http://www.worldofteaching.com is home to over a thousand powerpoints submitted by teachers. This is a completely free site and requires no registration. Please visit and I hope it will help in your teaching.