Transcript Document

1.4 : IMPORTANCE OF A HEALTHY
RESPIRATORY SYSTEM
Harmful substances to the Respiratory System
SULPHUR DIOXIDE
• Is released when fossil
fuels are burnt in
factories
• A poisonous acidic gas
• Dissolves in rain to form
acid rain
• Corrodes the
respiratory system as it
is corrosive
• Causes asthma and
bronchitis
1.4 : IMPORTANCE OF A HEALTHY
RESPIRATORY SYSTEM
Harmful substances to the Respiratory System
CARBON MONOXIDE
• A very poisonous gas
• Is produced out when
fossil fuels are
incompletely burnt
• Combines with
haemoglobin to form
carboxyhaemoglobin
• Reduces oxygen intake
and causes death of
carbon monoxide
poisoning
1.4 : IMPORTANCE OF A HEALTHY
RESPIRATORY SYSTEM
Harmful substances to the Respiratory System
CARBON DIOXIDE
• Produced from the
burning of fossil
fuels
• Traps heat (sun) in
the atmosphere and
causes global
warming
• Causes severe
headache
1.4 : IMPORTANCE OF A HEALTHY
RESPIRATORY SYSTEM
Harmful substances to the Respiratory System
DUST
•Irritates the
respiratory system
•Blocks the
bronchioles & causes
lung diseases
•Attracts bacteria –
tuberculosis bacteria
1.4 : IMPORTANCE OF A HEALTHY
RESPIRATORY SYSTEM
Harmful substances to the Respiratory System
SMOG
• Dust + mist = smog
• Reduces visibility
• Causes asthma and bronchitis especially among the
elderly people
1.4 : IMPORTANCE OF A HEALTHY
RESPIRATORY SYSTEM
Harmful chemicals in Cigarettes
NICOTINE
•Poisonous chemicals in
cigarettes
•Highly addictive
•Hardens the blood
vessels – blood cannot
flow through them easily
– causes high blood
pressure
•Causes lung cancer
1.4 : IMPORTANCE OF A HEALTHY
RESPIRATORY SYSTEM
Harmful Chemicals in Cigarettes
TAR
•Thick black substance –
sticks to the walls of
respiratory system
•Corrodes the lung cells –
lungs are less elastic &
unable to function properly
•Prevents dust particles &
bacteria from being cleared
from the lungs – leads to
infection
1.4 : IMPORTANCE OF A HEALTHY
RESPIRATORY SYSTEM
Harmful chemicals in Cigarettes
CARBON
MONOXIDE
• Decreases the
oxygen intake as it
tends to combine
better with
haemogolbin
compare to oxygen
• Causes a loss of
10% of oxygen
intake
1.4 : IMPORTANCE OF A HEALTHY
RESPIRATORY SYSTEM
Harmful Chemicals in Cigarettes
CARCINOGENS
• Chemicals which
causes cancer
• Cigarette smoke
contains
carcinogens such
as benzopyrene
• Causes mouth
cancer, lung
cancer & throat
cancer
1.4 : IMPORTANCE OF A HEALTHY
RESPIRATORY SYSTEM
Diseases of the Respiratory System
ASTHMA
1.4 : IMPORTANCE OF A HEALTHY
RESPIRATORY SYSTEM
Diseases of the Respiratory System
PNEUMONIA
1.4 : IMPORTANCE OF A HEALTHY
RESPIRATORY SYSTEM
Diseases of the Respiratory System
CHRONIC
BRONCHITIS
1.4 : IMPORTANCE OF A HEALTHY
RESPIRATORY SYSTEM
Diseases of the Respiratory System
EMPHYSEMA
1.4 : IMPORTANCE OF A HEALTHY
RESPIRATORY SYSTEM
Diseases of the Respiratory System
SILICOSIS
1.4 : IMPORTANCE OF A HEALTHY
RESPIRATORY SYSTEM
Diseases of the Respiratory System
BLACK LUNG
LUNG
CANCER