1. 4.2 FACTORS THAT AFFECT THE
HEALTHY FUNCTION OF BODY
SYSTEMS
Mr. Ilko

2. THE MAIN AREAS
 Disease affects all areas of the body and can range
from sever to mild in effects
 The main 3 that are affected within your body;
 Respiratory System
 Circulatory System
 Digestive System

3. FACTORS THAT AFFECT HUMAN HEALTH
 Through research we have discovered many
factors that affect your cells and therefore your
body systems.
 Some of these factors are;
 Disease or conditions that you have inherited from
family members
 Sensitivity to environmental conditions, such as smog or
specific substances ( i.e allergies)
 How you respond to physical, emotional and
psychological stress
 How you treat your body in general (sleep, exercise,

4. FACTORS AFFECTING THE RESPIRATORY
SYSTEM
 A very common disease that affects the respiratory
system is ASTHMA
 This disease effects the bronchioles in the lungs and limits
the amount of air that gets through

5. Its EXPERIMENT TIME!!!!
We are going to see what it
feels like to have ASTHMA

6.  Breath normally through your mouth and nose
normally
 Then take the straw, plug your nose and use it to
breathe for 20 seconds
 This will show you what it feels like to have a mild
asthma attack

7. COMMON FACTORS
IN SOCIETY

8. SMOKING
 Smoking has a huge impact on how our bodies can
be affected and disease can be created
 There are over 4000 different chemicals in a single
cigarette.
 The most destructive of them are nicotine, tar and
carbon monoxide

9. TAR
 Similar to the black sticky stuff used to pave roads
with
 This sticks to the organs of the respiratory system
after the smoker inhales
 It lines itself on the organs preventing the bodies
natural defenses to work properly

11. CARBON MONOXIDE
 Is colourless, odorless gas that is released as a
cigarette burns
 As it is inhaled it takes the place of oxygen in the
red blood cells
 It bonds to the red blood cell 100x better than oxygen
 Less oxygen can get to the body so the heart in
turn beats faster to try and catch up
 Is the primary cause of cancer in 2nd hand smoke
patients

13. NICOTINE
 This is a drug that is highly addictive and is know to
speed up heart rate and raise blood pressure
 It is the least dangerous of the three, but is so
addictive that it keeps bringing people back for
another cigarette

14. SMOKING DISEASES
 Bronchitis – mucus build up in the bronchi causing them
to become narrower.
 Commonly due to tar build up
 Emphysema – Damage of lung tissue due to cigarette
smoke. Damaged tissue cannot work the same way so
breathing becomes harder
 Damage is permanent
 Lung Cancer – A tumor or cancerous growth begins to
form in the lungs.
 As is grows it takes away lung tissue and makes it hard to
breathe
 40 of 4000 chemicals are known to cause cancer
 In 1999 – 17,400 Canadians died from lung cancer

18. BARB TARBOX

20. BARB STILL LIVES

22. FACTORS AFFECTING THE CIRCULATORY
SYSTEM
 There is one main factor that leads to difficulties in
the circulatory system
 That factor is; DIET
 All the fast foods (fries, burgers, etc) contain lots of fats
 When you eat these fatty foods, these fats are turned
into cholesterol ( a lipid that is found in the blood)
 A lipid is OILS and FATS together
 Over time it builds up on the walls of the arteries

24. DISEASES ASSOCIATED WITH THE
CIRCULATORY SYSTEM
 Atherosclerosis – This is the build up of cholesterol
in the arteries
 As arteries become narrower, the heart speeds up to
pump more blood through
 If the arteries become blocked completely, the heart
muscle cannot get enough oxygen to do its job
 This leads to a heart attack (myocardial infarction),
during this time cells begin to die due to the lack of
oxygen getting through.
 Must be treated immediately or they can die

26. FACTORS THAT AFFECT THE DIGESTIVE
SYSTEM
 There are a lot of different issues that arise when it
comes to the digestive system.
 Common ones are stomach aches, acid reflux, diarrhea,
and indigestion
 The more painful issue is ulcers

27. ULCERS
 Ulcers –
 are painful sores of the stomach lining
 Were once believed to be caused by stress, but are
now know to be caused by bacteria
 These bacteria eat away at the mucus that protects
the stomach lining and eventually creates a hole
 The gastric juice then breaks down the stomach
tissue, which is extremely painful