Foundation Science Presentation 3

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Addictive substances and 5 groups of drugs are discussed

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Foundation Science Presentation 3

  1. 1. Review Addictive SubstancesQuiz on Addictive Substances TodayAddictive Substances – substances which a person can becomedependent on. These substances are known as drugs.Drugs may enter a human body in many different ways: -Swallowed (eaten, or taken orally) -Injected in a vein - Inhaled *Warning
  2. 2. We will study 5 types of drugs1. Stimulants2. Depressants3. Narcotics4. Hallucinogens5. Inhalants
  3. 3. Stimulants-Stimulants – speed up the process of the nervous system, so a person may stay awake longer or stay excited.-Some truck drivers take stimulants so they can drive all night-Example stimulants: methamphetamine (=meth=speed), cocaine, caffeine, nicotine One year of meth use
  4. 4. Depressants-Depressants –slow down the activities of the central nervous system-They are taken to relax a person-Examples: alcohol, barbiturates-Alcohol causes slow brain activity and misjudgment…….
  5. 5. NarcoticsNarcotics – taken to relieve pain and make you sleep easier.They affect the body by depressing the nervous system.Examples: opium, heroin, morphine, codeine Heroin Before and After
  6. 6. HallucinogensHallucinogens – make you see things that are not real.Examples: LSD, cannabis (marijuana)
  7. 7. InhalantsInhalants are sniffed or breathed as vaporExamples: cleaning solvents, glue, paint, aerosol sprays, nitrousoxide
  8. 8. Common Drugs AlcoholSlows brain activity, and leads to misjudgment and loss of memoryEthanol is the type of alcohol present in beer and wineEffects on the body: damage of the brain, unconsciousness, liver damagePeople become easily addicted, loss of judgment leads to drunk driving
  9. 9. Common Drugs Cigarettes-Smoking – single greatest cause of preventable death-Smoke causes lung cancer, heart diseases, bronchitis, emphysema-There are over 19 known carcinogens in cigarette smoke-Carcinogen = chemical that causes cancer-The stimulant nicotine is what causes the dependence-Nicotine damages brain tissue, causes blood clots, and hardensartery walls-Second hand smoke – smoke that non-smokers inhale, is harmful to others-Second hand smoke causes asthma, allergies, heart and lung disease, sore eyes, sore throat and even lung cancer
  10. 10. Cigarette smoke can kill other people Lung cancer X-ray Cigarette smoke damages lungsCigarette smoke damages teeth

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