present pbs
TRANSCRIPT
the importance of a healthy respiratory system
Name : Tan Li Yingclass:3K2Teacher : Cik Raja Shahrina
table of contents Introduction**why are lungs so important? Substances harmful to the respiratory system The effect of harmful substances on
the respiratory system Disease of the respiratory system Way to improve air quality**improve indoor air quality**improve outdoor air quality conclusion
Why Are Lungs so Important? Answer Lungs are important because they
supply oxygen to body cells and release carbon dioxide to the atmosphere
Substances harmful to the respiratory system The quality of air can have significant effects
on our respiratory system As air moves into our lungs ,harmful
substances in the air may enter too. These harmful substances can cause disease or even death
Air pollutants include smoke of cigarettes , gases from the industries ,exhaust of engine and haze
Substances harmful to the respiratory system
Air pollutant Harmful substancesCigarette smoke Nicotine , TarGases from factories Sulphur dioxide ,Nitrogen
dioxideExhaust fumes Carbon monoxideHaze Smoke, Dust
Cigarette smoke Gases from factories
Exhaust fumes Haze
The effect of harmful substances onthe respiratory system
Nicotine Nicotine is a drug that causes addiction to cigarette smoking Nicotine causes rapid heartbeat , increased blood pressure
and rapid breathing The disease related
Tar
Tar contains carcinogens (substances that cause cancer)
Tar also irritates the respiratory tract , causing smoker’s cough
Sulphur dioxide Exposure to sulphur dioxide can cause the irritation of
the respiratory system It can cause temporary or permanent damage to the
lungsCarbon monoxide Carbon monoxide combines with haemoglobin in the blood
faster than oxygen can , hence it is poisonous gas which cause suffocation
-- Low concentration of carbon monoxide can cause dizziness , headache and fatigue whereas high concentration can fatal-- Particular matter (fine particles in the air) Continuous exposure to particulate matter causes coughing ,
nasal congestion , watery nose , constant sneezing and chest pain
Those who are very likely to be affected by haze are children , the elderly and people with illness like asthma , bronchitis and pneumonia
Disease of the respiratory system
asthma Heart disease
Asthma This disease is caused by the narrowing of the fine
airways ( bronchi and bronchioles) due to the contraction of sensitivity to air pollutants including smoke
A patient will find it different to breathe , wheezing and feeling tightness in the chest
Heart disease Nicotine raises the blood pressure and increase
the level of “bad” cholesterol in the blood This makes a smoker more likely to suffer from a
stroke or a heart attack
bronchitis
bronchitis Chronic brochitis can be defined as a condition
characterized by recurrent or chronic cough every day over a period of several months
This disease is caused by the inflammation of the lining of the bronchioles . This may be due to infection by bacteria or viruses , or chemicals such as those found in tobacco smoke
Smokers cough is an early sign of chronic bronchitis In severe cases,the patient may turn blue which is
specially noticeable at the lips and fingers due to poor oxygenation of blood
Lung cancer
Lung cancer This disease is caused by a change in the cells inside
the lungs such that they divide out of control and produce lumps of cells (tumours).Which interfere with the normal functions of the lungs
90% of lung cancer patients have been heavy smokers The risk of developing this disease is directly related to
the amount of tar that gets into the lungs Lung cancer may not have any symptoms.when it is
detected , the cancer cells may have spread from the lungs to other organs
Emphysema
Emphysema Emphysema is a condition in which the
structure of the alveoli is broken down by coughing . This reduces the surface area for gas exchange
Way to improve air quality
Improving indoor air quality Avoid smoking indoors Make sure there is a steady supply of
fresh air Minimize air conditioning use Keep carpets and floor dust free Maintain a low humidity to prevent
mould growth
Improving outdoor air quality Avoid open burning of leaves and trash Do not allow cars or other motor vehicles idle
for more than a minute Walk , ride a bicycle , car pool or use public
transportation Keep the motor vehicle well maintained and
use a fuel --- efficient vehicle Reduce , reuse and recycle waste materials Implement laws and regulations to control air
pollution
Conclusion As conclusion we should not smoke .It
because smoking can harm our health and respiratory system .Besides, activities of open burning must be solve and we also must reduce build factories to improve the quality of air for the benefit of mankind