Grade 8 health Q3

1. DRR XDSS DGD
YT DSFS G DRDG
VHHA
FHG DR SF SDFD
SSA QQ DWQQ W
SDSFS RWSQ
R E
W E SEAW DWB DR

8. Objectives
At the end of the lesson, the students will be
able to:
a. Discuss the nature, prevention, and
control of common communicable diseases;
b. Illustrate the different elements of the
chain of infection;
c. Demonstrate healthful practices in order
to prevent and control communicable
diseases.

9. What is Communicable disease
is an illness transmitted
through contact with
microorganisms that can be
transfer from one person to
another.

10. Factors that Influence Disease
Transmission
Environmental Factors
 Poor sanitations and facilities
 Contaminated food and water
 Pollution and climate
Socio-economic Factors
 Cultural practices
 Livelihood

11. Chain of Infection

12. Levels Preventing Diseases
Primary level
-activities done to get rid of disease.
Secondary level
- activities done to prevent further
damages when diseases already started.
Tertiary level
- rehabilitating the sick person.

13. What is Pathogens?
These are the tiny
microorganism that invade
the body and attacks its
cells and tissues.

14. Types of Pathogens
Bacteria
Viruses
Rickettsiae
Fungi
Protozoa
Parasitic worms

15. Bacteria
are one celled microscopic organisms
that rank among the widespread of the
living things.
Parasites
- which eats a living plant and animals.
Saprophytes
-which only digest non-living things
like meat and milk.

16. Two Types of Bacteria
Toxin bacteria
-produce certain food poison
and lives in the soil.
Resident bacteria
-lives in humans mouth,
intestines and skin.

18. Viruses
are small, simple life-like
form. These organisms are the
human body’s worst enemies
such as rabies virus, small pox
chicken pox, mumps

20. Rickettsiae
are organisms are somewhere
between virus and bacteria. They
grow in in the intestinal tracts of
blood sucking insects. These
causes typhus fever.

22. Fungi
are simple organisms that
cannot make their own food.
They live on dead animals,
insects, and leaves. The
common fungi are yeast and
mushrooms.

24. Protozoa
are single- celled organisms that
are larger that bacteria. Most of
these are harmless and they are
most common in tropical area.
They cause malaria, African
sleeping sickness.

26. Parasitic worms
Also called as helminth which came from the
Greek word “helmins” means worm.
Helminth eggs contaminate food, water, air
feces, pets, wild animals, and objects such as
toilet seats and door handles.
Common helminths are the roundworms,
pinworms, tipworms and flukes.

27. Roundworms Pinworms

28. Flukes Tapeworms

29. Activity1.
In one whole sheet of paper make your own 10
hygienic commandments for yourself that will
prevent you from getting infected by diseases.
Criteria
Relevance - 10 points
Completeness - 10 points
Observable - 10 points

30. Test I. Multiple choice. Write the letter
that corresponds to the correct answer.
1. An illness transmitted through contact
with microorganisms that can be transfer
from one person to another.
a. Non-communicable disease
b. Communicable disease
c. Disease prevention
d. Chain of infection

31. 2. It is a level of disease prevention
in which you get immunize, eat a
healthy diet, and have enough sleep
to prevent sickness.
a. Primary c. Tertiary
b. Secondary d. Both b and c

32. 3. These are the tiny
microorganisms that invade the
body and attacks its cells and
tissues.
a. Cell c. bacteria
b. Pathogens d. Parasites

33. 4. Which of the following is an
example of virus?
a. Chicken fox
b. Typhus fever
c. “ Alipungha”
d. Dengue

34. 5. A factors which poor sanitations
and facilities can influence
disease transmission.
a. Socio-economic
b. Personal
c. Emotional
d. Environmental

35. Items 6-10
Illustrate the different elements of
the chain of infection.