Ch. 4Ch. 4Sec. 2 Sec. 2

Smoking & Your HealthSmoking & Your Health

Chemicals in tobacco smoke

DARK, STICKY SUBSTANCETHAT FORMS

WHENTOBACCO

BURNS

STICKS TOCILIA ON

RESPIRATORYORGANS

HAS CHEMICALSTHAT CAUSE

CANCER

tar

tar

COLORLESS,ODORLESS

GAS

BINDS TOHEMOGLOBIN

CAUSESRED BLOODCELLS TO

CARRY LESSOXYGEN

CARBON

MONOXIDE

The more cigarettes a person smokes, the more carbon monoxide he or she inhales.

How does carbon monoxide deprive the body of oxygen?

SPEEDS UPNERVOUS

SYSTEM, HEART& OTHERORGANS

MAKES HEARTBEAT

FASTER &BLOOD

PRESSURERISE

PRODUCES ADDICTION(PHYSICAL

DEPENDENCE)

NICOTINE

HEALTH PROBLEMS

chronic bronchitis

• irritation of breathing passages become narrower

• clog with mucus• difficulty breathing

HEALTH PROBLEMS

emphysema • destroys lung tissue

• causes difficulty breathing

• permanent damage - even if stop smokinglung damaged lung damaged

by emphysemaby emphysema

This lung was taken from an 82 year old male who died from natural causes and never smoked.

This lung was taken from a 42 year old male who died from the effects of smoking around 20 cigarettes per day.

HEALTH PROBLEMS

lung cancer • tumors take away space in lungs that s/b used for gas exchange

Lung cancer

HEALTH PROBLEMS

atherosclerosis • chemicals in tobacco irritate walls of blood vessels

• buildup of fatty material

• smokers 2X likely to have heart attackYouTube video-What smoking does to your

body

Passive Smoking

• involuntary inhale smoke from other people’s cigarettes, cigars or pipes

• smoke has same harmful chemicals that smokers inhale

Choosing not to smoke

• 90% of smokers began smoking as teenagers

• temptations to smoke:–peer pressure–advertisements

Fred & Wilma Flintstone & Barney Rubble smoking in the

1950’s

Do you Do you know know about about

smoking smoking and and your your

health?health?

What are 3 harmful substances in tobacco smoke?

What are 3 harmful substances in tobacco smoke?

1.Tar

2.Carbon monoxide

3.Nicotine

How does each of the harmful substances directly affect the body?

How does each of the harmful substances directly affect the body?1. Tar-affects the respiratory system. Causes

cilia to clump together so they can’t prevent harmful materials from entering the lungs. Contains chemicals that cause cancer.

2. Carbon monoxide-affects the circulatory and respiratory systems. Binds to hemoglobin in red blood cells so that they can’t carry enough oxygen-leads to increased breathing and heart rates

3. Nicotine-affects the nervous system & heart. Speeds up their activities & increases blood pressure. Causes addiction.

Why might nicotine-containing products, such as chewing gums or skin patches, help a person who is

trying to quit smoking?

Why might nicotine-containing products, such as chewing gums or skin patches, help a person who is

trying to quit smoking?

• The nicotine in the products will help satisfy the person’s craving for nicotine.

Identify 4 health problems that can develop in smokers over

time.

Identify 4 health problems that can develop in smokers over

time.1. Bronchitis

2. Emphysema

3. Lung cancer

4. Atherosclerosis

How does smoking contribute to atherosclerosis?

How does smoking contribute to atherosclerosis?

• Chemicals from smoke get into the blood are absorbed by blood vessels, and then irritate the walls of the blood vessels. The irritation contributes to the buildup of fatty materials.

What effect would it have on the circulatory system if a

person quit smoking?

What effect would it have on the circulatory system if a

person quit smoking?• The blood could carry more

oxygen. The blood vessels would no longer be irritated by the chemicals in the tobacco smoke. Blood pressure might be lower. The person then would be less likely to have atherosclerosis or a heart attack.

Anti-Smoking Commercials

• Funny Anti-Smoking commercial

• Serious anti-smoking commercial