The document discusses the human digestive system and nutrition. It describes the four processes of the nutrition function: obtaining nutrients, respiration, carrying substances, and eliminating waste. It then explains the three groups of nutrients - energy-producing, body-building, and body-regulating. Next, it outlines the two main parts of the digestive system: the tract and glands. It provides details on how the digestive system works, transforming food, absorbing nutrients, and eliminating waste. Lastly, it discusses diet, tips for a healthy diet, and three things to do to stay healthy.

1. WE NEED FOOD •
The nutrition function consists of four processes:
1- Obtaining nutrients by eating or drinking.
2- Respiration
3- Carrying substances.
4- Eliminating waste.
FOODS AND THE NUTRIENTS: three groups:
1- Energy – producing are mainly carbohydrates and fats. We obtain
energy.
E.g. nuts, butter.
2- Body-building: proteins. Our body grows and repairs itself.
E.g. legumes and cheese.
3- Body-regulating: vitamins, minerals and fibre. It prevents illnesses and
keep you healthy. E. g. : calcium, tomatoes..
•

2. THE DIGESTIVE SYSTEM
is the part of the body that:
- TAKES IN FOOD and
- TRANSFORMS IT INTO NUTRIENTS.
TWO PARTS:
1) THE TRACT: is a long tube which food PASSES THROUGH.
Parts: MOUTH, PHARYNX, OESOPHAGUS, STOMACH, SMALL and LARGE INTESTINES
and ANUS.
2) THE GLANDS: organs that produces substances to BREAK DOWN foods to
extract nutrients.
Glands: SALIVARY GLANDS, LIVER and PANCREAS.

3. THE DIGESTIVE SYSTEM
Salivary glands
pharynx

4. HOW THE DIGESTIVE SYSTEM WORK
• Three processes:
1- TRANSFORMING FOOD:
– Food is GROUND UP by the teeth.
– Food is MIXED UP with substances.
2-ABSORBING NUTRIENTS:
- Nutrients are absorbed through the walls of the intestine.
- They pass into the bloodstream and are distributed.
3-ELIMINATING WASTE:
- The food that the body doesn´t need PASSES INTO the
large intestine.
- FAECES are formed.
- They are eliminated through the ANUS.

5. DIET
It´s the food and water that a person eats in a day.
WHAT IS A HEALTHY DIET LIKE? It´S a diet that contains the nutrients and
water that the body needs.
5 TIPS FOR A HEALTHY DIET
- Have 5 meals a day but eat the right amount.
- Eat an energy-producing breakfast.
- Do not eat sugary or fatty foods.
- Eat legumes once or twice a week.
- Eat fruit and vegetables every day.

6. STAYING HEALTHY
Three things you can do to stay healthy:
1- Food safety: to avoid dangerous substances.
- wash your hands before you eat.
- use clean cutlery, plates and cups.
- wash fruit and vegetables.
- eat fresh food.
2- Physical exercise:
- to help us build strong bones and muscles.
- to make us more flexible.
- to use the energy that our body doesn´t need.
3- Sleep and rest: children need to sleep 8 or 9 hours.
- to relax your muscles, breathing and heartbeat.
-to grow.
- to let the brain organises the information.