digestive system


When you think about something tasty, digestive system begins to release more saliva than  normal levels. It is common to say: “It makes my mouth water”. This formation of saliva is just the first step of digestion, and is called salivation. This process is necessary for digestive system because food must be mixed with saliva to form a soft dough that can slide down his throat.

Stages of digestive system

1. Insalivation

  • It begins the digestion of food when inserting it into the mouth, the teeth are responsible for chewing to make smaller pieces, saliva is mixed with them to soften and tongue helps to form a dough and their movements will help food from going into the stomach.
  • There are three kinds of Teeth: incisors, which cut food, the canine, the tearing, and molars, which grind and crush.

2. Digestion

  • By swallowing every bite, goes through a tube called the esophagus. As the food slides down the esophagus, it moves to push down and facilitate delivery to the stomach.
  • The stomach is a bag-shaped organ, is very elastic, because when empty is small and the food is enlarged.
  • The food remains in the stomach about two hours, during which time the muscles will be moving it constantly to mix food with gastric juices, which serve to break up the food and get the nutrients. After two hours the food has been turned into a thick soup-like porridge.
  • When food leaves the stomach, has completed the second stage called digestion.

3. Absorption

  • At this stage the food reaches the small intestine, the body responsible for obtaining nutrients.
  • It is a tube-shaped body and very long thin, so you have to be bent.
  • The interior has a bowel villi and liquids that work together to get the nutrients from the food and take them to the blood thus distributed throughout the body and it is used in different functions.
  • The liver and pancreas are other organs that assist in the absorption of food. Both are some juices that serve to convert nutrients into simple substances that can be assimilated by the blood.
  • Food remains about nine hours at this stage, so that the intestine, liver and pancreas, they can derive from nutrients.

4. Disposal

  • Once obtained nutrients by the small intestine became blood, intestine eliminate them will handle the water they have left to give it also to the blood.
  • The large intestine is also a tube, less long and wider than the small intestine.
  • In addition to removing excess water from the food that is not going to use, the compact to be eliminated as stool.
  • When you have just eaten not be rude or swimming exercise, because the digestive process spends a lot of energy during exercise, swimming or doing any heavy work, he “removes” energy part of the digestive process and can cause discomfort and even death if they are swimming.
  • So, do not do any exercise after eating, you should spend some time at least two hours.
  • When there is an upset stomach or stomach pain, this can be due to eating too much or too quickly, it can also be because of the type of food eaten, which have not been very fresh and they were very spicy or salty.
  • To prevent stomach pain or discomfort, you should try to eat slowly, chew well, not stopping to play while eating. Nor should eat foods too cold or too hot, they hurt.

They should also avoid eating too many sweets and if you need to eat on the street, in a restaurant or office, make sure it is very clean, the food smells good and tastes good. Similarly, drinking dirty water that has not been boiled or disinfected can cause illness.

Foods rich in fiber, such as cereals, aid the proper disposal of waste, because all people should remove every day. When someone has difficulty evacuating, is said to be constipated, and if on the other hand, waste is disposed of in liquid form and often, it is a diarrhea. When a child has frequent diarrhea, you can download the appropriate level of body water and dehydrated. In these cases, you should drink plenty of water and preferably ORS, to replenish minerals and fluids lost body. A poorly attended dehydration can cause death. So any abnormal symptoms should be discussed with a doctor.


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