B1 Topic 3 - Effects of drugs 0.0 / 5 ? BiologyEffects of drugsGCSEEdexcel Created by: laura_sCreated on: 10-01-16 10:29 What is a Drug? A drug is a chemical substance that changes any way in which the body works. 1 of 10 Describe the general effects of Painkillers. Painkillers block nerve impulses to stop us feeling pain. 2 of 10 Name three examples of painkillers. Paracetamol, Ibuprofen, Morphine. 3 of 10 Describe the general effects of Hallucinogens. A substance that distorts sense perception. 4 of 10 Name an example of a hallucinogen. LSD. 5 of 10 Describe the general effects of stimulants. Stimulants increase the speed of nerve impulses (neurotransmission) across synapses. This speeds up reaction times. 6 of 10 Explain what is meant by a reaction time. The time it takes for the body to respond to an outside stimulus. 7 of 10 Name an example of a stimulant. Caffeine. 8 of 10 Describe the general effects of depressants. Depressants slow down the activity of neurones in the brain and can help us to relax. 9 of 10 Name an example of a depressant. Alcohol. 10 of 10
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