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The Journey Of A Cheese Sandwich

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Jacob Greenwood

on 3 November 2013

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Transcript of The Journey Of A Cheese Sandwich

The Journey Of A Cheese Sandwich

By Jacob Greenwood

The cheese sandwich is made up of: Bread, cheese and butter. The bread contains carbohydrates and fibre; The cheese is mainly made up of fat but also contains a small amount of protein as well as some vitamins and calcium. The butter is made up of mainly fat.
First, the food is placed into the mouth. It is then chewed by the teeth whilst saliva is produced to make the food into a paste. The amylase enzymes turn the starch molecules (found in the bread) into glucose. The glucose is later taken down to the small intestine, where it is absorbed into the blood stream.

After being chewed and swallowed, the sandwich enters the esophagus. The oesophagus is a long tube that runs from the mouth to the stomach. It uses rhythmic, wave-like muscle movements to force food from the throat into the stomach. This muscle movement gives us the ability to eat even when we're upside-down.
Once the cheese sandwich has passed through the esophagus, it enters the stomach where hydrochloric acids break the food down further. The food is then mixed with protease enzymes which are used to digest protein. Protein is vital for growth and to repair damaged areas of the human body. Also, the enzymes produced in the stomach, work best in acidic conditions.
After passing through the stomach, the food reaches the small intestine. Here the food is digested into even more simple molecules and some of it is absorbed into the blood. When food crosses the small intestine wall, it goes into the blood stream and then gets transported throughout the body for use by other cells to provide energy for the body to function. After that, all the other leftovers and water are taken to the large intestine.
After passing through the small intestine, food passes into the large intestine. In the large intestine, the liquid and nutrients are absorbed from it, eventually forming a dry lump of material that is no longer necessary for your body. If you take in too much water, it causes diarrhoea. Where as too little water can cause constipation.
The waste is then stored in the rectum until you go to the toilet. It is then sent to the anus where it is released.
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