This is an English language lesson about the food journey inside our body.

It is intended for students who are learning Science in English as a second language.

Think of the food journey as a long rollercoaster ride.  There are a lot of twists and turns.

We actually call it the human digestion system.

Let me explain.

It begins when we eat food and it ends when we make the call of nature to the toilet.

There is around 25 feet or seven metres of tracts, tubes and pipes inside our body.

It can take up as long as two days for the food to complete its journey.

We need to eat food because it contains nutritients and vitamins which give us energy and enable us to grow, have strength and stay healthy.

But we do not need all the stuff we eat, so some of it gets discarded along the way and ends up as waste.

Food is consumed in the mouth.

We use our teeth, tongue and saliva to do this.

Our mouth with our thirty-three teeth grinds, bites and chews the food into small modules.

The mouth is just one of the many human organs we use to digest food.

The brain helps us decide whether  we like or not what we eat through taste.

The four basic tastes are saltiness, sourness, bitterness and sweetness.

Food passes from the mouth and through the throat to the stomach.

The stomach is just one organ part of the abdomen and is the  food storage tank inside our body.

Food does not stay in the stomach but continues its journey to the other organs in the abdomen such as the small and large intestine.

The liver, gall-bladder and the pancreas are not part of the food path inside our body but these organs play an important role in the digestion process.

A variety of different foods must be eaten and regularly such as meat, fish, fruit and vegetables, carbohydrates, otherwise medical conditions such as heart disease, cancer or diabetes can arise.

So it becomes time when the toilet trip must be made and the food journey is completed.

That’s the end of my explanation about the food journey and the human digestion system in simple terms.

Thank you for your attention.

Other lessons will follow in the natural science series.



Mouth                         Teeth                           Tongue

Saliva                          Swallow                      Bite

Chew                           Throat                          Stomach

Abdomen                    Nutritients                   Toilet trip

Body Organ                Intestine                      Liver

Digestion                     Indigestion                  Modules

Discarded                    Waste                          Consumed



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