The document is a lesson on why students should avoid cigarettes and the harmful effects of tobacco use. It discusses how tobacco contains the addictive drug nicotine and toxic chemicals like tar and carbon monoxide. The lesson defines short-term effects of tobacco use like changes in brain chemistry and long-term effects like lung cancer and heart disease. It also covers the risks of smokeless tobacco and consequences of tobacco use.

1. LessonLesson 11
Why should you avoid cigarettes?
Cigarettes contain 43 known carcinogens, including cyanide,
formaldehyde, and arsenic.
The Effects of Tobacco Use
They also contain poisonous
chemicals used in
insecticides, paint, toilet
cleaners, antifreeze, and
explosives.

2. LessonLesson 11
• List harmful substances in tobacco and tobacco
smoke
• Examine the harmful effects of tobacco use on body
systems
• Compare the physical, mental, social, and legal
consequences of tobacco use
In this lesson, you will learn to:
Lesson Objectives

3. LessonLesson 11
Tobacco Use—A Serious Health Risk
Nicotine
• One of the reasons that tobacco
users find it difficult to quit is that
tobacco contains an addictive drug.
• All tobacco products contain nicotine
.
• Nicotine is classified as a stimulant.
• It raises blood pressure, increases
heart rate, and contributes to heart
disease and stroke.

4. LessonLesson 11
Cigarette Smoke—A Toxic Mixture
Toxic Tobacco
• Not only is tobacco addictive, but the smoke from burning
tobacco is toxic.
• In 1992 the Environmental Protection Agency classified
environmental tobacco smoke, or secondhand smoke, as a
Group A carcinogen.
• Other compounds in tobacco smoke are tar and
carbon monoxide.

5. LessonLesson 11
Tar
• Tar penetrates the smoker’s respiratory system and
destroys cilia that line the upper airways and protect
against infection.
• It damages the alveoli, or air sacs, which absorb oxygen
and rid the body of carbon dioxide.
• It also destroys lung tissue, making the lungs less able to
function.
Cigarette Smoke—A Toxic Mixture

6. LessonLesson 11
Carbon Monoxide
• Carbon monoxide replaces oxygen in the blood, thereby
depriving the tissues and cells of oxygen.
• It also increases the risk of high blood pressure, heart
disease, and hardening of the arteries.
Cigarette Smoke—A Toxic Mixture

7. LessonLesson 11
Harmful Effects of Pipes and Cigars
Cigars
• Cigars contain significantly more nicotine and produce more
tar and carbon monoxide than cigarettes do.
• One cigar can contain as much nicotine as a pack of
cigarettes.
• Pipe and cigar smokers have an increased risk of developing
cancers of the lip, mouth, and throat.

8. LessonLesson 11
Harmful Effects of Smokeless Tobacco
Why You Shouldn’t Use Smokeless Tobacco
Smokeless tobacco delivers both nicotine and carcinogens to
the body at two to three times the amount delivered by a
single cigarette.
• Smokeless tobacco irritates the mouth’s sensitive tissues,
causing leukoplakia.
• Cancers of the throat, larynx, esophagus, stomach, and
pancreas are also more common among users of smokeless
tobacco.

9. LessonLesson 11
How Tobacco Affects the Body
Short-Term Effects of Tobacco Use
Changes in Brain
Chemistry
Increased Respiration
and Heart Rate
Dulled Taste Buds and
Reduced Appetite
Bad Breath and Smelly
Hair, Clothes, and Skin

10. LessonLesson 11
Long-Term Effects of Tobacco Use
Chronic Bronchitis
Emphysema
Lung Cancer
Coronary Heart
Disease and Stroke
How Tobacco Affects the Body

11. LessonLesson 11
Chronic Bronchitis
• Repeated tobacco use can damage the cilia in the bronchi
until the cilia no longer function.
• This leads to a buildup of tar in the lungs, causing chronic
coughing and excessive mucus secretion.
How Tobacco Affects the Body

12. LessonLesson 11
Emphysema
• This is a disease that destroys the tiny air sacs in the lungs.
• The air sacs become less elastic, making it more difficult for
the lungs to absorb oxygen.
• A person with advanced emphysema uses up to 80 percent
of his or her energy just to breathe.
How Tobacco Affects the Body

13. LessonLesson 11
Lung Cancer
• When the cilia in the bronchi are destroyed, extra mucus
cannot be expelled.
• Cancerous cells can grow in these conditions, block the
bronchi, and move to the lungs.
• Unless detected early, lung cancer causes death.
How Tobacco Affects the Body

14. LessonLesson 11
Coronary Heart Disease and Stroke
• Nicotine constricts blood vessels, which cuts down on
circulation, or blood flow.
• Nicotine also contributes to plaque buildup in the blood
vessels, which can lead to hardened arteries, a condition
called arteriosclerosis.
• Arteries may become clogged, increasing the risk of heart
attack and stroke.
How Tobacco Affects the Body

15. LessonLesson 11
Other Consequences
Serious Consequences for Teens
• Legal consequences: Schools prohibit the use of
tobacco products on school property, and a student may
be suspended or expelled for breaking these rules.
• Social consequences: Many people find secondhand
smoke and the smell of tobacco offensive, so tobacco
users may be excluded from social gatherings.
• Financial consequences: Someone who smokes a pack
of cigarettes a day can spend more than $2,000 each year
just on cigarettes.

16. LessonLesson 11
Choose the appropriate option.
1. nicotine
2. tar
3. carcinogen
4. leukoplakia
Q. The addictive drug found
in tobacco leaves is
called ___________.
Quick Review

17. LessonLesson 11
Click Next to attempt another question.
A. 1. nicotine
The addictive drug found in tobacco leaves is called
nicotine.
Quick Review - Answer

18. LessonLesson 11
Q. Nicotine is harmful because it
raises blood pressure, increases
heart rate, and contributes to
heart disease and stroke.
Quick Review
Choose the appropriate option.
True
False

19. LessonLesson 11
A.True. Nicotine is harmful because it raises blood
pressure, increases heart rate, and contributes to heart
disease and stroke.
Click Next to attempt another question.
Quick Review - Answer

20. LessonLesson 11
Q. The short-term effects of tobacco
use are changes in brain chemistry;
increased respiration and heart
rate; dulled taste buds and reduced
appetite; bad breath; and smelly
hair, clothes, and skin.
The long-term effects of tobacco
use are chronic bronchitis,
emphysema, lung cancer, coronary
heart disease, and stroke.
Quick Review
Choose the appropriate option.
True
False

21. LessonLesson 11
A.True. The short-term effects of tobacco use are changes
in brain chemistry; increased respiration and heart rate;
dulled taste buds and reduced appetite; bad breath; and
smelly hair, clothes, and skin.
The long-term effects of tobacco use are chronic
bronchitis, emphysema, lung cancer, coronary heart
disease, and stroke.
Quick Review - Answer

22. LessonLesson 11
End of Lesson 1
Click Home to view the Main menu.

23. LessonLesson 11
Nicotine
• One of the reasons that tobacco
users find it difficult to quit is that
tobacco contains an addictive drug.
• All tobacco products contain
nicotine.
• Nicotine is classified as a stimulant.
• It raises blood pressure, increases
heart rate, and contributes to heart
disease and stroke.
An addictive
drug is a substance
that causes
physiological or
psychological
dependence.
An addictive
drug is a substance
that causes
physiological or
psychological
dependence.
Tobacco Use—A Serious Health Risk

24. LessonLesson 11
Nicotine
• One of the reasons that tobacco
users find it difficult to quit is that
tobacco contains an addictive drug.
• All tobacco products contain
nicotine.
• Nicotine is classified as a stimulant.
• It raises blood pressure, increases
heart rate, and contributes to heart
disease and stroke.
Nicotine is
the addictive
drug found in
tobacco leaves.
Nicotine is
the addictive
drug found in
tobacco leaves.
Tobacco Use—A Serious Health Risk

25. LessonLesson 11
Nicotine
• One of the reasons that tobacco
users find it difficult to quit is that
tobacco contains an addictive drug.
• All tobacco products contain
nicotine.
• Nicotine is classified as a stimulant.
• It raises blood pressure, increases
heart rate, and contributes to heart
disease and stroke.
A stimulant is a
drug that increases
the action of the
central nervous
system, the heart,
and other organs.
A stimulant is a
drug that increases
the action of the
central nervous
system, the heart,
and other organs.
Tobacco Use—A Serious Health Risk

26. LessonLesson 11
• Not only is tobacco addictive, but the smoke from burning
tobacco is toxic.
• In 1992 the Environmental Protection Agency classified
environmental tobacco smoke, or secondhand smoke, as a
Group A carcinogen.
• Other compounds in tobacco smoke are tar and
carbon monoxide.
Toxic Tobacco
A carcinogen
is a cancer-
causing
substance.
A carcinogen
is a cancer-
causing
substance.
Cigarette Smoke—A Toxic Mixture

27. LessonLesson 11
Toxic Tobacco
• Not only is tobacco addictive, but the smoke from burning
tobacco is toxic.
• In 1992 the Environmental Protection Agency classified
environmental tobacco smoke, or secondhand smoke, as a
Group A carcinogen.
• Other compounds in tobacco smoke are tar and
carbon monoxide.
Tar is a
thick, sticky, dark
fluid produced
when tobacco
burns.
Tar is a
thick, sticky, dark
fluid produced
when tobacco
burns.
Cigarette Smoke—A Toxic Mixture

28. LessonLesson 11
Toxic Tobacco
• Not only is tobacco addictive, but the smoke from burning
tobacco is toxic.
• In 1992 the Environmental Protection Agency classified
environmental tobacco smoke, or secondhand smoke, as a
Group A carcinogen.
• Other compounds in tobacco smoke are tar and
carbon monoxide.
Carbon
monoxide is a
colorless, odorless,
and poisonous gas.
Carbon
monoxide is a
colorless, odorless,
and poisonous gas.
Cigarette Smoke—A Toxic Mixture

29. LessonLesson 11
Smokeless tobacco delivers both nicotine and carcinogens to
the body at two to three times the amount delivered by a
single cigarette.
• Smokeless tobacco irritates the mouth’s sensitive tissues,
causing leukoplakia.
• Cancers of the throat, larynx, esophagus, stomach, and
pancreas are also more common among users of smokeless
tobacco.
Smokeless is the
tobacco that is sniffed
through the nose, held
in the mouth, or
chewed.
Smokeless is the
tobacco that is sniffed
through the nose, held
in the mouth, or
chewed.
Why You Shouldn’t Use Smokeless Tobacco
Harmful Effects of Smokeless Tobacco

30. LessonLesson 11
Why You Shouldn’t Use Smokeless Tobacco
Smokeless tobacco delivers both nicotine and carcinogens to
the body at two to three times the amount delivered by a
single cigarette.
• Smokeless tobacco irritates the mouth’s sensitive tissues,
causing leukoplakia.
• Cancers of the throat, larynx, esophagus, stomach, and
pancreas are also more common among users of smokeless
tobacco.
Leukoplakia refers to
thickened, white,
leathery-looking spots on
the inside of the mouth
that can develop into oral
cancer.
Leukoplakia refers to
thickened, white,
leathery-looking spots on
the inside of the mouth
that can develop into oral
cancer.
Harmful Effects of Smokeless Tobacco

31. LessonLesson 11
A. Correct! The addictive drug found in tobacco leaves is
called nicotine.
Click Next to attempt another question.
Quick Review - Answer

32. LessonLesson 11
You have answered the question incorrectly. Go back to try
again, or click Next to view the correct answer.
Quick Review - Answer

33. LessonLesson 11
A. Correct! Nicotine is harmful because it raises blood
pressure, increases heart rate, and contributes to heart
disease and stroke.
Click Next to attempt another question.
Quick Review - Answer

34. LessonLesson 11
You have answered the question incorrectly. Go back to try
again, or click Next to view the correct answer.
Quick Review - Answer

35. LessonLesson 11
A. Correct! The short-term effects of tobacco use are
changes in brain chemistry; increased respiration and
heart rate; dulled taste buds and reduced appetite; bad
breath; and smelly hair, clothes, and skin.
The long-term effects of tobacco use are chronic
bronchitis, emphysema, lung cancer, coronary heart
disease, and stroke.
Quick Review - Answer

36. LessonLesson 11
You have answered the question incorrectly. Go back to try
again, or click Next to view the correct answer.
Quick Review - Answer