The digestion system of the body digests food in four stages...

The digestion system of the body digests food in four stages and here we would summarize them as follows: First Stage: Through the means of teeth we chew morsels of food and make them smaller; the teeth which are given to us possess complete coordination with the type of food; the tongue moves inside the mouth and places morsels under the teeth in order to make them very soft.

In addition to that like a proactive worker of Customs, it checks and controls of the food, distinguishes good from bad and fresh from the spoiled; salivation glands excrete special fluids so that morsel could become very soft and could be eaten easily; in addition to that, the saliva of the mouth…