Download Find out what the digestive system is

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Worksheet
Find out what the digestive system is
The digestive system is a kind of circuit that goes from top to bottom of the human
body; that’s where the foostuff passes through. This “circulation” is called
“digestion”. All these steps make up the great circuit of the digestive system.
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2. THE PHARYNX AND THE OESOPHAGUS, TWO ESSENTIAL TUBES
They bring the alimentary bolus down to the stomach and they prevent air
from penetrating the lungs while we swallow our food.
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3. THE STOMACH, THE STORAGE ROOM THAT HANDLES THE DIGESTION
It’s the temporary storage room for the foodstuff: here begins the process
of absorbing the nutrients that the alimentary bolus carries.
4. THE LIVER AND THE PANCREAS: THEY FILTER, PREPARE AND DIGEST
Both of them are key organs. The liver filters the blood full of nutrients that
comes from the intestine; moreover, it produces the bile and mineral
salts, that separate fats in order to digest easier. The pancreas secretes
enzymes that are essential to digest the carbohydrates, fats and
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1. THE MOUTH: THE BEGINNING OF EVERYTHING
Foodstuffs enter our body through the mouth. Here is transformed the food into
“alimentary bolus” thanks to the team work done by teeth, tongue and saliva. This is
the first step; called mechanic digestion. After that, the saliva enzymes break the
foodstuff into smaller particules: its’ the chemical digestion.
proteins.
5. THE SMALL INSTESTINE ABSORBS THE NUTRIENTS
It’s a very long tube, and has certain roles. The nutrients are absorbed
in this first part called the small intestine. How? They add to the blood
from where they will be spread out to the whole body.
6. THE LARGE INTESTINE, THE COLON AND THE RECTUM: THE
LAST STEPS
The second part of the intestine is called the large intestine. Here
is absorbed the remaining water and are compacted all the solid
products that the body couldn’t absorb. Finally, we eject all those
solids through the colon and the rectum in form of excrements.
In association with:
The digestive system,
the foodstuff’s journey
inside the body.