The document discusses nutrition and the digestive process. It explains that food provides the body with energy and building materials through nutrients and oxygen. A balanced diet includes all types of nutrients like carbohydrates, fats, proteins, water, vitamins and minerals in the correct quantities to meet the body's needs. The digestive process involves digestion in the mouth, stomach and small intestine, absorption of nutrients in the small intestine, and elimination of waste from the large intestine.

1. ENERGY
to
Eat
Beat
Think
Walk
Breathe
Our body never
stops working, so it
needs…

2. BUILDING
MATERIALS
TO
Grow
Repair
damage
that
occurs in
the body.
Our body also needs…
Childhood and
puberty
Adults

3. Nutrition starts when
we eat food.
Cells in our body
transform
nutrients into
energy and
building materials
using OXYGEN.
Food contains
NUTRIENTS.
Nutrients + oxygen = energy and building materials.

5. FOOD
Can be from
Animal
source
Vegetable
source
Contains
NUTRIENTS
We can classify into
Carbohydrates Fats Proteins Water Vitamins Minerals

6. 1.1Carbohydrates
- They supply
energy
- Food high in
carbohydrates: potatoes
cereals
bread pasta

7. 1.2Fats or lipids
- They supply
energy
Come from animals Come from plants
butter
Red meat
Dairy
products Olive oil
fish chicken
High in fats low in fats

8. 1.3Proteins
- They are
necessary to grow.
- They are necessary to
repair our body.
Red meat fish
eggs
legumes
nuts
seeds

9. 1.4Water
- It is the most
abundant -
nutrient
in our bodies.
- It transports
nutrients and
waste around the
body.

10. Vitamins and
minerals
- They are
necessary for a
healthy body.
fruit
vegetables
meat fish

11. Fibre
- It is a complex
carbohydrate.
- It is indigestible
to humans but
necessary to
mantain a healthy
digestive system.
fruit
vegetables
Whole grains cereals

13. What is a DIET? A DIET IS THE COLLECTION OF FOODS THAT A
PERSON USUALLY EATS.
COMPLETE BALANCED
It includes all of
the types of
nutrients.
It has the
correct quantity
of each
nutrient.

14. What happens when a diet is not
complete or balanced?
We can develope disorders or diseases.
Obesity Growth problems

15. INVESTIGATION WORK : Is your diet Balanced and Complete?
Monday Tuesday Wednesday Thursday Friday Saturday Sunday
Breakfast
Morning
Snack
Lunch
Afternon
Snack
Dinner

17. The digestive process
Three stages
Digestion Absorption Elimination of
waste
HELPER
GLANDS:
They produce
liquids called
digestive juices.
DIGESTIVE
TUBE:
They join
together to
form a tube.

18. Digestion
1. In the mouth,
food is crushed
and mixed with
saliva. A BOLUS is
formed.
2. The bolus moves
past the pharynx and
through the
oesophagus.
3. In the stomach, the
bolus is mixed with
gastric juices to form
CHYME.
4. In the small
intestine, chyme is
mixed with
pancreatic juice and
bile to form CHYLE.

19. Absorption
Is when nutrients pass from the digestive tube
to the blood.
This occurs in the small intestine.

20. Elimination of waste
After absorption, the small intestine only
contains those parts of food that cannot
be digested.
This waste moves into large intestine
where it is transformed into faeces.
Faeces are excreted out of the body.