chapter 10 tobacco/addiction/respiratory system. do now list 3 reasons you should refuse an offer of...
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Chapter 10
Tobacco/Addiction/Respiratory System
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Do Now
• List 3 reasons you should refuse an offer of a cigarette.
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Harmful Effects on the Body
• 4000 chemicals (single puff)• 43 cause cancer
• 400,000 people die each year
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Harmful Substances in Tobacco1. Nicotine2. Methanol
3. Tar4. Cyanide
5. Carbon monoxide6. Formaldehyde
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Important Definitions
1. Nicotine – an addictive drug found in tobacco
2. Tar - a thick, dark liquid that forms when tobacco burns
3. Carbon monoxide – a colorless, odorless, poisonous gas produced when tobacco burns
4. Methanol - a poisonous liquid alcohol, known to cause blindness
5. Cyanide – a deadly poison6. Formaldehyde – acidic gas used in a lab,
disinfects and preserves
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Forms of Tobacco
1. Cigarettes2. Cigars/pipes
3. Smokeless tobacco
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Do now
• Although you breathe all the time, you probably don’t think about it very often. Describe the activities or conditions that make you aware of your breathing.
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Respiratory System
A set of organs that supply your body with oxygen and rid your
body of carbon dioxide.
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Parts of the Respiratory System
1. Nose/mouth – cilia trap dirt in nose2. Epiglottis – flap that covers trachea to
prevent food inside3. Trachea (windpipe) – air from throat to lungs4. Lungs – exchange oxygen and carbon dioxide5. Bronchi – tube that branches from trachea to
lungs6. Diaphragm – muscle below lungs that
expands/relaxes = breath
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Breathing Process
1. Diaphragm expands > air enters the body through nose/mouth > epiglottis > trachea > bronchi
2. Bronchi divide > bronchioles > alveoli surrounded by capillaries > oxygen and carbon dioxide exchange = blood
3. Diaphragm relaxes > air leaves the body that contains carbon dioxide from the lungs
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Illnesses of the Respiratory SystemCold/Flu
Caused by Virus
SymptomsRunny nose, cough, fever
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Illnesses of the Respiratory System
Pneumonia
Caused by Virus/Bacteria
SymptomsFever, chest pain
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Illnesses of the Respiratory SystemAsthma
Airways narrow
SymptomsWheezing, shortness of breath
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Illnesses of the Respiratory System
Tuberculosis
Caused by Bacteria
SymptomsCough, fatigue, fatal
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Illnesses of the Respiratory System
Emphysema
Caused by smoking, Alveoli harden
SymptomsDifficulty breathing
NO CURE!!
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Illnesses of the Respiratory System
Lung Cancer
Caused by uncontrolled growth of cells that produce abnormally
(surgery, radiation, medications)
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Ways to Keep the RS Healthy
1. Don’t smoke2. Avoid people/situations that
expose you to smoke3. Take care of your body = cold,
flu
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Do now
• List some ways you might help someone who wants to quit using tobacco.
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Dependencies
Psychological DependenceAn addiction in which a
personbelieves that he/she
needs a drug inorder to feel good or
functionnormally
Physical DependenceAn addiction in which the
bodydevelops a chemical need
for a drug.
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Addiction
A physiological or physical need for a drug or other substance
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Do now
• Briefly explain why you think staying tobacco free is good for your health.
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Reasons for Teenage Use
1. Peer pressure2. Family members3. Seem grown up4. Look cool5. Look like a celebrity6. Hooked and can’t quit
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Important Definitions
1. Secondhand smoke – air that has been contaminated by smoke
2. Mainstream smoke – smoke that a smoker inhales/exhales
3. Sidestream smoke – smoke that comes from the burning end of the cigarette
4. Passive smokers – non-smokers who breath secondhand smoke
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Benefits of Saying NO to Tobacco
1. Healthy skin2. Fresh breath3. Honest toward parents/friends4. Better smelling clothes/hair5. Save money6. Better health7. More energy and endurance8. Fewer allergies