1 DIGESTION:

• When you eat you chew the food in your

mouth. The food mixes with saliva so it is

easier to swallow. The food now is called

bolus.

• Then, the food travels down the pharynx

and oesophagus into the stomach.

• The stomach is like a mixer. It has three

important jobs:

1. To store food

2. To mix food with gastric juices,

forming a thick liquid called

chyme.

3. To empty the food into the small

intestine

2 ABSORTION:

All the minerals, vitamins, carbohydrates,

proteins and fats are absorbed into the blood in

the small intestine.

The small intestine is about 7 metres long!

The gallbladder, pancreas and liver help the

small intestine sending juices

3 ELIMINATION OF WASTE

Indigested substances, called like fibre form a

milky fluid called chyle that passes to the large

intestine. The large intestine forms the faeces

that are expelled through the anus.

SOURCES:http://kidshealth.org/kid/htbw/digestive_system.html.http://kidshealth.

org/kid/htbw/digestive_system.htmlSantillana 2007: Essencial Science 5.

Richmond Publishing

WHAT IS DIGESTION?

It is a process that allows your body to convert

the food you eat into nutrients and energy.

WHAT IS THE DIGESTIVE SYSTEM?

All the organs that work in your body to

transform the food into nutrients and energy.

WHAT DO THESE ORGANS DO IN

DIGESTION?

Digestion consists of three functions:

digestion, absortion and elimination of waste.

1- LABEL THE PARTS OF THE DIGESTIVE SYSTEM:

Small intestine - oesophagus – stomach – mouth- large intestine

2- WRITE THE FUNCTIONS OF THE DIGESTION PROCRESS IN ORDER:

ABSORTION – ELIMINATION OF WASTE – DIGESTION

1__________________ 2___________________ 3_______________________

3- HOW DO WE CALL THE FOOD WHEN IT IS STILL IN OUR MOUTH BUT

MIXED WITH SALIVA?

A- CHYME B- CHYLE C- BOLUS D- FOOD

4- WHAT ORGANS SEND JUICES TO THE SMALL INTESTINE TO HELP IT

DO THE ABSORTION PROCESS?

1-_______________ 2-________________________3-__________________