jueves, 8 de noviembre de 2007

THE PARTS OF DIGESTION



How digest food?

Digestion includes the mixture of food, its passage through the digestive tract and chemical decomposition of large molecules into smaller molecules. It begins in the mouth, where masticamos and eat, and ends in the small intestine. The chemical process varies slightly depending on the type of food.

The large and hollow organs of the digestive system have muscles that allow its walls move.
The first major movement occurs when muscle eat foods or liquids. Although this part of the process is voluntary, begins as soon as it becomes involuntary happens to be under the control of nervios.Despues, passes through the intestines (first by the great and then by paqueño) and within a few hours be accepted

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