Food comes from various sources like plants, animals, and water. Food is classified into five groups - grains, vegetables, fruits, milk, and meat/fish/beans - which provide us with energy, vitamins, minerals, and proteins. A balanced diet consists of eating a variety of foods from each group to stay healthy. The digestive system breaks down food through a multi-step process involving the mouth, esophagus, stomach, and intestines to extract nutrients for the body and eliminate waste.

1. 1
Food And Digestion
• Some food comes from animals, like milk.
• Others, comes from plants like fruit and
bread.
• We also need water and salt , that do not
come from plants
or animals.

2. 2
Food groups
• We classify food into five groups:
1. Grains gives us energy.
2. Vegetables gives us vitamines.
3. Fruit gives us vitamines to be healthy.
.

3. 3
4. Milk gives us calcium to grow and have
strong bones.
5. Meat, fish and beans
give us proteins to have
strong muscles
A healthy diet
• Our diet is made up of the things that we
eat and drink.
• We need to eat from all the groups to stay
healthy, this is a balanced diet.

4. 4
THE DIGESTIVE SYSTEM
- The digestive system is made of
following organs: the mouth, oesophagus,
stomach, intestines and anus.
- Food enters our body through our mouth.
- Our oesophagus is a tube between the
mouth and stomach.

5. 5
- Our stomach is like a bag.
- Our intestine is a long tube, made up of
small intestine and large intestine.
THE STAGES OF DIGESTION
• 1.Digestion begins in the mouth .
- Our theeth catch and chew the food.
- Our tongue mixes the food with saliva.
- Then the food goes down the esophagus
and into the stomach.

6. 6
• 2. In the stomach food is mixed with a
liquid (gastric juice).
3. In the small intestine:
• - the food is dividided into the sustances
our body need.
• - all the useful parts of food go from our
small intestine into the blood.

7. 7
4. Large intestine
• Parts we cannot use go into the large
intestine.
• They are transformed into faeces and
expelled through the anus.
• Digestion takes time (about 2 hours)
• So we need to wait before swimming or
running.