Foundation Science Presentation 3
- 1. Review Addictive Substances Quiz on Addictive Substances Today Addictive Substances – substances which a person can become dependent 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. We will study 5 types of drugs 1. Stimulants 2. Depressants 3. Narcotics 4. Hallucinogens 5. Inhalants
- 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. 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. Narcotics Narcotics – 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. Hallucinogens Hallucinogens – make you see things that are not real. Examples: LSD, cannabis (marijuana)
- 7. Inhalants Inhalants are sniffed or breathed as vapor Examples: cleaning solvents, glue, paint, aerosol sprays, nitrous oxide
- 8. Common Drugs Alcohol Slows brain activity, and leads to misjudgment and loss of memory Ethanol is the type of alcohol present in beer and wine Effects on the body: damage of the brain, unconsciousness, liver damage People become easily addicted, loss of judgment leads to drunk driving
- 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 hardens artery 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. Cigarette smoke can kill other people Lung cancer X-ray Cigarette smoke damages lungs Cigarette smoke damages teeth