The document describes the structure and organization of the human body from cells to organ systems. It provides examples of each level of organization including cells forming tissues like muscle tissue, tissues forming organs like the heart, organs forming organ systems like the circulatory system, and organ systems coming together to form a complete organism. The document then focuses on the digestive system, labeling and describing each part of the digestive system including the mouth, stomach, small intestine, pancreas, liver, and more. It also describes the different types of teeth and their functions, as well as the major food groups and examples of microorganisms used in food production like yeast in bread and bacteria in yogurt.

2. Lets start from the beginning.
• A cell is the building block of every living thing.
Example: muscle cell.
• A group of similar cells working together makes a
tissue, example: muscle tissue.
• A group of different tissues working together makes
an organ, example: heart.
• A group of different organs working together makes
an organ system, example: circulatory system.
• Many different organ system make up an organism!!

4. Digestive system

5. Label the following:
A:…………………
B: …………………
C:…………………
D:…………………
E:…………………
F:…………………
G:…………………
H:…………………
I:…………………
J:…………………
K:…………………
A
B
C
D
E
F
G
H
K J I
Mouth
Appendix
Stomach
Rectum
Large intestine/ colon
Small intestine
Pancreas
Anus
Liver
Oesophagus
Salivary gland

6. Each Tooth has a special
shape and role:
1. Incisors : sharp to cut
and bite food.
2. Canines: Sharp and
pointed to cut and
tear.
3. Premolars: have
cusps and grooves to
grind , crush & chew
the food.
4. Molars: same as
premolars but larger in
size
Canine
Incisors
Premolars
Molars

7. Different
teeth
showing
crown and
root

8. Food groups
Carbohydrates:
are used as a
fuel for the
body, provides
body with
energy for
respiration and
growth.

9. Proteins
Provide the
body with
molecules
needed to
make new cells.
Useful for
growth and
repair.

10. Fats
Stored under
the skin, acts
as a heat
insulator to
keep body
warm. It is a
good store of
energy.
butter cheese
milk
cream
Ghee/
margarine
oil

11. Vitamins
Provide the body
with molecules
needed for a
strong immune
system, nerves,
bones, skin and
blood vessels.
For general
body health.

12. Micro-organisms
in food production
Yeast is a fungus
used in bread
making.

13. Yoghurt
making
A bacterium is used
to make yoghurt
from milk.
First milk is boiled to
kill any
microorganisms,
then cooled to 40⁰C,
then yoghurt is
mixed with milk and
kept warm for 6
hours till milk
curdles (stiffens).