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Chapter 8
Tobacco
Lesson 1
How Tobacco Affects
the Body
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 nicotine
An addictive, or habit-forming, drug found in
tobacco
 tar
A thick, dark liquid that forms when tobacco burns
A colorless, odorless, poisonous gas produced
 carbon
monoxide when tobacco burns
 alveoli
The tiny air sacs in the lungs
 emphysema
A disease that results in the destruction of the
alveoli in the lungs
In this lesson, you will be able to
 identify the harmful ingredients in tobacco smoke.
 describe how tobacco affects the body.
 apply the skill of advocacy to encourage someone to be
tobacco free.
Predicting
Look over the headings in this
Headings in this Lesson
lesson. Write a question that
you think the lesson will
answer. After the lesson, check
to see if your question was
answered.
• Facts About Tobacco
• What Is in Tobacco?
• Forms of Tobacco
• Tobacco Affects Body Systems
Facts About Tobacco
4,000 Harmful
Chemicals!
One puff of
tobacco smoke
=
In the United States, more than 400,000 people die every year
from smoking-related illnesses.
What Is In Tobacco?
Tobacco products contain poisonous substances
such as nicotine, tar, and carbon monoxide.
nicotine An addictive, or habit-forming, drug found in tobacco
tar A thick, dark liquid that forms when tobacco burns
carbon monoxide A colorless, odorless, poisonous gas produced
when tobacco burns
What Is In Tobacco?
Cyanide
Formaldehyde
A deadly poison
found in pest
control products.
A burning, stinging
gas used as a
preservative
in laboratories.
Causes nasal
cancer.
Methyl Ethyl
Ketone
Used in solvents.
Harms the central
nervous system.
Polonium 210
An element known
to cause cancer.
Forms of Tobacco
Cigarettes
• Filters do not keep out
harmful chemicals.
• Flavored cigarettes
have more chemicals
than non-flavored
cigarettes.
Cigars and Pipes
Smokeless Tobacco
• Cigar smoke is more
harmful than cigarette
smoke.
• The two forms are
chewing tobacco and
snuff.
• Smokers of cigars and
pipes are more likely to
get mouth, tongue, or
lip cancer than people
who don’t smoke.
• Nicotine is absorbed
into the body through
the digestive tract.
• Smokeless tobacco is
just as harmful and
addictive as cigarettes.
Tobacco Affects Body Systems
Some of the effects of using tobacco include:
Bad breath
Bad odor in hair and clothes
Increased heart rate
Increased blood pressure
Getting sick more often and longer
Decreased ability to run as far or as fast
Respiratory System
Breathing in tobacco smoke damages the alveoli,
which can lead to emphysema.
alveoli The tiny air sacs in the lungs
emphysema A disease that results in the destruction of the
alveoli in the lungs
Digestive System
Smoking can lead to mouth and stomach ulcers,
which are painful, open sores.
Smoking increases the chances that you will get
cavities and gum disease.
Nervous System
The brain adapts to nicotine by increasing the
number of nicotine receptors.
This causes tobacco users to need more tobacco.
Circulatory System
As a person smokes, blood vessels constrict.
Over time, the blood vessels can harden, which
can lead to heart attack, stroke, or coronary heart
disease.
Excretory System
SMOKE
CHEMICALS
Lungs
Blood
Kidneys
And Urine
Bladder damage and
increased risk of
colorectal cancer
Lesson 1 Review
What I Learned
Vocabulary Define tar.
Lesson 1 Review
What I Learned
Explain Describe the ways in which smoking harms
the body.
Lesson 1 Review
What I Learned
Identify Name five substances in tobacco smoke that
are harmful to the body.
Lesson 1 Review
What I Learned
List Name three forms of tobacco.
Lesson 1 Review
Thinking Critically
Hypothesize How might you influence a peer to make
the healthful choice to quit chewing tobacco?
Lesson 1 Review
Thinking Critically
Analyze Why do you think it is important for a teen to
never try tobacco?
End of
Chapter 8
Tobacco
Lesson 1
How Tobacco Affects
the Body
Click for:
>> Main Menu
>> Chapter 8 Assessment