Tobacco

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Tobacco

  1. 1. LessonLesson 11Why should you avoid cigarettes?Cigarettes contain 43 known carcinogens, including cyanide,formaldehyde, and arsenic.The Effects of Tobacco UseThey also contain poisonouschemicals used ininsecticides, paint, toiletcleaners, antifreeze, andexplosives.
  2. 2. LessonLesson 11• List harmful substances in tobacco and tobaccosmoke• Examine the harmful effects of tobacco use on bodysystems• Compare the physical, mental, social, and legalconsequences of tobacco useIn this lesson, you will learn to:Lesson Objectives
  3. 3. LessonLesson 11Tobacco Use—A Serious Health RiskNicotine• One of the reasons that tobaccousers find it difficult to quit is thattobacco contains an addictive drug.• All tobacco products contain nicotine.• Nicotine is classified as a stimulant.• It raises blood pressure, increasesheart rate, and contributes to heartdisease and stroke.
  4. 4. LessonLesson 11Cigarette Smoke—A Toxic MixtureToxic Tobacco• Not only is tobacco addictive, but the smoke from burningtobacco is toxic.• In 1992 the Environmental Protection Agency classifiedenvironmental tobacco smoke, or secondhand smoke, as aGroup A carcinogen.• Other compounds in tobacco smoke are tar andcarbon monoxide.
  5. 5. LessonLesson 11Tar• Tar penetrates the smoker’s respiratory system anddestroys cilia that line the upper airways and protectagainst infection.• It damages the alveoli, or air sacs, which absorb oxygenand rid the body of carbon dioxide.• It also destroys lung tissue, making the lungs less able tofunction.Cigarette Smoke—A Toxic Mixture
  6. 6. LessonLesson 11Carbon Monoxide• Carbon monoxide replaces oxygen in the blood, therebydepriving the tissues and cells of oxygen.• It also increases the risk of high blood pressure, heartdisease, and hardening of the arteries.Cigarette Smoke—A Toxic Mixture
  7. 7. LessonLesson 11Harmful Effects of Pipes and CigarsCigars• Cigars contain significantly more nicotine and produce moretar and carbon monoxide than cigarettes do.• One cigar can contain as much nicotine as a pack ofcigarettes.• Pipe and cigar smokers have an increased risk of developingcancers of the lip, mouth, and throat.
  8. 8. LessonLesson 11Harmful Effects of Smokeless TobaccoWhy You Shouldn’t Use Smokeless TobaccoSmokeless tobacco delivers both nicotine and carcinogens tothe body at two to three times the amount delivered by asingle cigarette.• Smokeless tobacco irritates the mouth’s sensitive tissues,causing leukoplakia.• Cancers of the throat, larynx, esophagus, stomach, andpancreas are also more common among users of smokelesstobacco.
  9. 9. LessonLesson 11How Tobacco Affects the BodyShort-Term Effects of Tobacco UseChanges in BrainChemistryIncreased Respirationand Heart RateDulled Taste Buds andReduced AppetiteBad Breath and SmellyHair, Clothes, and Skin
  10. 10. LessonLesson 11Long-Term Effects of Tobacco UseChronic BronchitisEmphysemaLung CancerCoronary HeartDisease and StrokeHow Tobacco Affects the Body
  11. 11. LessonLesson 11Chronic Bronchitis• Repeated tobacco use can damage the cilia in the bronchiuntil the cilia no longer function.• This leads to a buildup of tar in the lungs, causing chroniccoughing and excessive mucus secretion.How Tobacco Affects the Body
  12. 12. LessonLesson 11Emphysema• This is a disease that destroys the tiny air sacs in the lungs.• The air sacs become less elastic, making it more difficult forthe lungs to absorb oxygen.• A person with advanced emphysema uses up to 80 percentof his or her energy just to breathe.How Tobacco Affects the Body
  13. 13. LessonLesson 11Lung Cancer• When the cilia in the bronchi are destroyed, extra mucuscannot be expelled.• Cancerous cells can grow in these conditions, block thebronchi, and move to the lungs.• Unless detected early, lung cancer causes death.How Tobacco Affects the Body
  14. 14. LessonLesson 11Coronary Heart Disease and Stroke• Nicotine constricts blood vessels, which cuts down oncirculation, or blood flow.• Nicotine also contributes to plaque buildup in the bloodvessels, which can lead to hardened arteries, a conditioncalled arteriosclerosis.• Arteries may become clogged, increasing the risk of heartattack and stroke.How Tobacco Affects the Body
  15. 15. LessonLesson 11Other ConsequencesSerious Consequences for Teens• Legal consequences: Schools prohibit the use oftobacco products on school property, and a student maybe suspended or expelled for breaking these rules.• Social consequences: Many people find secondhandsmoke and the smell of tobacco offensive, so tobaccousers may be excluded from social gatherings.• Financial consequences: Someone who smokes a packof cigarettes a day can spend more than $2,000 each yearjust on cigarettes.
  16. 16. LessonLesson 11Choose the appropriate option.1. nicotine2. tar3. carcinogen4. leukoplakiaQ. The addictive drug foundin tobacco leaves iscalled ___________.Quick Review
  17. 17. LessonLesson 11Click Next to attempt another question.A. 1. nicotineThe addictive drug found in tobacco leaves is callednicotine.Quick Review - Answer
  18. 18. LessonLesson 11Q. Nicotine is harmful because itraises blood pressure, increasesheart rate, and contributes toheart disease and stroke.Quick ReviewChoose the appropriate option.TrueFalse
  19. 19. LessonLesson 11A.True. Nicotine is harmful because it raises bloodpressure, increases heart rate, and contributes to heartdisease and stroke.Click Next to attempt another question.Quick Review - Answer
  20. 20. LessonLesson 11Q. The short-term effects of tobaccouse are changes in brain chemistry;increased respiration and heartrate; dulled taste buds and reducedappetite; bad breath; and smellyhair, clothes, and skin.The long-term effects of tobaccouse are chronic bronchitis,emphysema, lung cancer, coronaryheart disease, and stroke.Quick ReviewChoose the appropriate option.TrueFalse
  21. 21. LessonLesson 11A.True. The short-term effects of tobacco use are changesin brain chemistry; increased respiration and heart rate;dulled taste buds and reduced appetite; bad breath; andsmelly hair, clothes, and skin.The long-term effects of tobacco use are chronicbronchitis, emphysema, lung cancer, coronary heartdisease, and stroke.Quick Review - Answer
  22. 22. LessonLesson 11End of Lesson 1Click Home to view the Main menu.
  23. 23. LessonLesson 11Nicotine• One of the reasons that tobaccousers find it difficult to quit is thattobacco contains an addictive drug.• All tobacco products containnicotine.• Nicotine is classified as a stimulant.• It raises blood pressure, increasesheart rate, and contributes to heartdisease and stroke.An addictivedrug is a substancethat causesphysiological orpsychologicaldependence.An addictivedrug is a substancethat causesphysiological orpsychologicaldependence.Tobacco Use—A Serious Health Risk
  24. 24. LessonLesson 11Nicotine• One of the reasons that tobaccousers find it difficult to quit is thattobacco contains an addictive drug.• All tobacco products containnicotine.• Nicotine is classified as a stimulant.• It raises blood pressure, increasesheart rate, and contributes to heartdisease and stroke.Nicotine isthe addictivedrug found intobacco leaves.Nicotine isthe addictivedrug found intobacco leaves.Tobacco Use—A Serious Health Risk
  25. 25. LessonLesson 11Nicotine• One of the reasons that tobaccousers find it difficult to quit is thattobacco contains an addictive drug.• All tobacco products containnicotine.• Nicotine is classified as a stimulant.• It raises blood pressure, increasesheart rate, and contributes to heartdisease and stroke.A stimulant is adrug that increasesthe action of thecentral nervoussystem, the heart,and other organs.A stimulant is adrug that increasesthe action of thecentral nervoussystem, the heart,and other organs.Tobacco Use—A Serious Health Risk
  26. 26. LessonLesson 11• Not only is tobacco addictive, but the smoke from burningtobacco is toxic.• In 1992 the Environmental Protection Agency classifiedenvironmental tobacco smoke, or secondhand smoke, as aGroup A carcinogen.• Other compounds in tobacco smoke are tar andcarbon monoxide.Toxic TobaccoA carcinogenis a cancer-causingsubstance.A carcinogenis a cancer-causingsubstance.Cigarette Smoke—A Toxic Mixture
  27. 27. LessonLesson 11Toxic Tobacco• Not only is tobacco addictive, but the smoke from burningtobacco is toxic.• In 1992 the Environmental Protection Agency classifiedenvironmental tobacco smoke, or secondhand smoke, as aGroup A carcinogen.• Other compounds in tobacco smoke are tar andcarbon monoxide.Tar is athick, sticky, darkfluid producedwhen tobaccoburns.Tar is athick, sticky, darkfluid producedwhen tobaccoburns.Cigarette Smoke—A Toxic Mixture
  28. 28. LessonLesson 11Toxic Tobacco• Not only is tobacco addictive, but the smoke from burningtobacco is toxic.• In 1992 the Environmental Protection Agency classifiedenvironmental tobacco smoke, or secondhand smoke, as aGroup A carcinogen.• Other compounds in tobacco smoke are tar andcarbon monoxide.Carbonmonoxide is acolorless, odorless,and poisonous gas.Carbonmonoxide is acolorless, odorless,and poisonous gas.Cigarette Smoke—A Toxic Mixture
  29. 29. LessonLesson 11Smokeless tobacco delivers both nicotine and carcinogens tothe body at two to three times the amount delivered by asingle cigarette.• Smokeless tobacco irritates the mouth’s sensitive tissues,causing leukoplakia.• Cancers of the throat, larynx, esophagus, stomach, andpancreas are also more common among users of smokelesstobacco.Smokeless is thetobacco that is sniffedthrough the nose, heldin the mouth, orchewed.Smokeless is thetobacco that is sniffedthrough the nose, heldin the mouth, orchewed.Why You Shouldn’t Use Smokeless TobaccoHarmful Effects of Smokeless Tobacco
  30. 30. LessonLesson 11Why You Shouldn’t Use Smokeless TobaccoSmokeless tobacco delivers both nicotine and carcinogens tothe body at two to three times the amount delivered by asingle cigarette.• Smokeless tobacco irritates the mouth’s sensitive tissues,causing leukoplakia.• Cancers of the throat, larynx, esophagus, stomach, andpancreas are also more common among users of smokelesstobacco.Leukoplakia refers tothickened, white,leathery-looking spots onthe inside of the mouththat can develop into oralcancer.Leukoplakia refers tothickened, white,leathery-looking spots onthe inside of the mouththat can develop into oralcancer.Harmful Effects of Smokeless Tobacco
  31. 31. LessonLesson 11A. Correct! The addictive drug found in tobacco leaves iscalled nicotine.Click Next to attempt another question.Quick Review - Answer
  32. 32. LessonLesson 11You have answered the question incorrectly. Go back to tryagain, or click Next to view the correct answer.Quick Review - Answer
  33. 33. LessonLesson 11A. Correct! Nicotine is harmful because it raises bloodpressure, increases heart rate, and contributes to heartdisease and stroke.Click Next to attempt another question.Quick Review - Answer
  34. 34. LessonLesson 11You have answered the question incorrectly. Go back to tryagain, or click Next to view the correct answer.Quick Review - Answer
  35. 35. LessonLesson 11A. Correct! The short-term effects of tobacco use arechanges in brain chemistry; increased respiration andheart rate; dulled taste buds and reduced appetite; badbreath; and smelly hair, clothes, and skin.The long-term effects of tobacco use are chronicbronchitis, emphysema, lung cancer, coronary heartdisease, and stroke.Quick Review - Answer
  36. 36. LessonLesson 11You have answered the question incorrectly. Go back to tryagain, or click Next to view the correct answer.Quick Review - Answer

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