Drugs These are a small set of notes for anyone to use!!! 0.0 / 5 ? BiologyMedicine and drugsGCSEAQA Created by: Nitika Sharma:)Created on: 22-04-14 18:55 What is a drug? A drug is a chemical substance that affects the way that your body works. 1 of 13 Types of Drugs Medicinal: Cure illness or relieve symptoms Recreational: Drugs that are taken for pleasure Illegal: Very dangerous and can cause long term damage 2 of 13 What do stimulants do? Stmulants increase the release of chemicals across the synapse Increased alertness Give you faster reactions Raised heart rate and blood pressure Reduced appetite E.g. Caffeine, Cocaine and Ecstacy 3 of 13 What do depressants do? Depressants slow down the release of chemicals across the synapse Make you feel relaxed Make you feel more sociable E.g. Alcohol, Nicotine and Cannabis Some depressants, such as heroin, also reduce pain 4 of 13 Painkillers Painkillers block the release of chemicals across the synapse Stop pain Reduce pain E.g. Paracetamol, Ibroprufen and Heroin 5 of 13 Hallucinagens Hallucinagens change the release of chemicals across the synapse You see things that are not real You hear things that are not real E.g. Cannabis and LSD 6 of 13 What is addiction? A person is said to be addicted to, or dependant on, a drug when they feel that they are unable to stop taking it 7 of 13 What is withdrawal? When addicts try to stop taking drugs they begin to feel very unwell Symptons include: Aches Sweating Shaking Headaches Cravings 8 of 13 The effects of alcohol Alcohol affects the nervous system by slowing down reactions It helps people relax Too much can lead to lack of self control, inconsciousness and even comas Long term abuse eventually damages the liver and the brain 9 of 13 The effects of Nicotine Nicotine is the addictive substance in tobacco smoke This makes it difficult for people to stop smoking Nicotine patches and nicotine chewing gum can be used to help people to stop smoking 10 of 13 The effects of Tobacco smoke Tobacco smoke contains caccinagens that cause cancer The link between smoking tobacco and lung cancer has been known for about 100 years. This was gradually accepted by people Tobacco smoke contains carbon monoxide which reduces the oxygen-carrying capacity of the blood In pregnant women this can deprive the fetus of oxygen and lead to low birth mass 11 of 13 The effects of Ecstacy, cannabis and heroin Ecstacy, cannabis and heroin may have adverse effects on the heart and the circularitory system Cannabis smoke contains chemicals which may cause mental illnesses in some people 12 of 13 The effects of drug abuse Peer pressure (encouraged more to do it) Drug induced diseases Criminal activity (E.g. Stealing) Treatment is expensive Weed smells Anti- social behaviour Onto benefits (Won't hold down normal jobs) Passive smoking Neglect Normality lost Isolation 13 of 13
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