Transcript 9B Fit and Healthy - AIS IGCSE Science

Topic 9.7
Respiratory
system & smoking
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The respiratory system and health
Why is a respiratory system that works
properly essential for good health?
The respiratory system provides
the body with the oxygen it needs
for respiration.
The lungs are delicate, spongy
organs that deal with 12,000 litres
of air each day.
Smoking is a very dangerous habit that has serious effects
on the lungs and respiratory system.
How does smoking damage health and fitness?
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Cigarette smoke experiment
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Harmful chemicals in cigarettes
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How does smoking affect the lungs?
Which picture shows the healthy lungs of a non-smoker and
which show the unhealthy lungs of a smoker?
healthy lungs
smoker’s lungs
Not a difficult question to answer but some people still
think that smoking is cool!
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How does smoking affect health?
How will these chemicals be harmful to the body’s systems?
 Carbon monoxide – A poisonous gas that reduces the
around of oxygen that red blood cells carry around the body.
 Tar – A brown, sticky substance that consists of tiny particles
and is formed when tobacco smoke condenses. It is
deposited in the lungs and coats the surface of the alveoli.
 Nicotine – An addictive drug that affects the central
nervous system. It increases the heart rate and narrows
the blood vessels, causing high blood pressure.
Smoking affects the respiratory and circulatory systems
but has many other effects on the body. What other health
problems and diseases are related to this habit?
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How does smoking affect health?
dental hygiene
problems
facial wrinkles
asthma
lung cancer
heart disease
impaired
immune system
cervical cancer
emphysema
mouth, lip and
throat cancer
pancreatic cancer
testicular cancer
liver cancer
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kidney cancer
Effects of smoking
on health
bronchitis
osteoporosis
menstrual
problems
leukaemia
sperm abnormalities
and impotence
stomach cancer
bladder cancer
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Scary smoking statistics!
Smoking doesn’t just make you unfit and unhealthy, it kills.
 In the UK, around 114,000 smokers die every year as a
result of their habit – that’s the same as 13 people per hour!
 Smoking kills around five times more people in the UK
than road traffic accidents, other accidents, poisoning and
overdose, alcoholic liver disease, murder and
manslaughter, suicide and HIV infection all put together!
 About half of all regular cigarette smokers will eventually
be killed by their habit!
With such scary statistics about smoking, what can be done
to help people give up this harmful habit?
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Smoking ban
Passive smoking has health implications
for people who do not smoke.
 People living with a smoker are
25% more likely to get lung cancer.
 Every year, 17,000 children are
admitted to hospital due to inhaling
smoke from those around them.
Due to the serious effects of smoking on smokers and
non-smokers, the government have proposed a ban in
every cafe, restaurant and pub that sells food in England.
Will everyone have the same response to this proposal
to protect public health?
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Smoking bans around the world
Smoking is banned in many public places around the world…
New York
Norway
Romania
Ireland
California
Boston
South Korea
Iran
France
Italy
Tokyo
Pakistan
Greece
Turkey
Thailand
Uganda
Tanzania
South Africa
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Australia
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Smoking ban opinions
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Smoking – true or false?
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