1
FOOD AND DIGESTION.
WE NEED FOOD TO LIVE .
- Food gives us the substances we need to
grow and stay healthy.
- We get ene...
2
- Other, comes from plants, like fruit and
bread.
- We also need water and salt, that do not
come from plants or animals...
3
4. Milk gives us calcium to grow and have
strong bones .
5. Meat, fish and beans, give us proteins to
have strong muscle...
4
HOW MUCH FOOD
DO WE NEED?
-The quantity of food we need depends on
how old we are and how much physical
exercise we do.
...
5
- If we do a lot of exercise, we need to eat
more.
- A good breakfast should have milk,
cereals and fruit.
6
THE DIGESTIVE SYSTEM
• The digestive system is made up of the
following organs: the mouth, oesophagus,
stomach, intestin...
7
- Our stomach is like a bag.
- Our intestine is a long tube. It is made up
of small intestine and large intestine.
- At ...
8
- In the stomach food is mixed with gastric
juices.
- In the small intestine the food is divided
into the subtances our ...
9
- Digestion takes time (2 hours). We should
wait before we swim or run.
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Food5

  1. 1. 1 FOOD AND DIGESTION. WE NEED FOOD TO LIVE . - Food gives us the substances we need to grow and stay healthy. - We get energy to walk or study . - Some food comes from animals, like meat and milk.
  2. 2. 2 - Other, comes from plants, like fruit and bread. - We also need water and salt, that do not come from plants or animals. FOOD GROUPS - We classify into five groups: 1. Grains gives us energy. 2. Vegetables gives us vitamines. 3. Fruit gives us vitamines to be healthy.
  3. 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 - Out diet is made up of the things that we eat and drink. - We need to eat food from all the groups to stay healthy, this is a balanced diet
  4. 4. 4 HOW MUCH FOOD DO WE NEED? -The quantity of food we need depends on how old we are and how much physical exercise we do. - When we are growing we need more of some types of food. For example, we need milk because it has calcium. FOOD AND MEALS -There are four meals: breakfast, lunch, tea and dinner . - It is very important to have a good breakfast. A good breakfast provides the nutrients that people need to start their day off right.
  5. 5. 5 - If we do a lot of exercise, we need to eat more. - A good breakfast should have milk, cereals and fruit.
  6. 6. 6 THE DIGESTIVE SYSTEM • The digestive system is made up of the 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.
  7. 7. 7 - Our stomach is like a bag. - Our intestine is a long tube. It is made up of small intestine and large intestine. - At the end of the large intestine is the anus. THE STANGE OF DIGESTION - Digestion begins in the mouth. Our teeth cut the food. - Our tonge mixes the food with saliva. - The food goes down The oesophagus.
  8. 8. 8 - In the stomach food is mixed with gastric juices. - In the small intestine the food is divided into the subtances our body need. - All the useful parts of the food go from the small intestine to the blood. - Parts we cannot use go into the large intestine. - They are transformed into faeces and expelled through the anus.
  9. 9. 9 - Digestion takes time (2 hours). We should wait before we swim or run.

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