an introduction
Human beings live on breathing, food and drink, which can not live without any one of them, and digestion is one of the complex processes that occur in the human body, and the human needs to eat continuously and on a daily basis. Food is a diet for tissues and cells that give the person energy to exercise his life normally, and without Food becomes the body is weak and unable to move, and over – not far – cause death, so the primitive man all his desire to seek food to fill his hunger, and gives his body the energy necessary to search for food for another day, and these basic needs of man, Fullness and benefit his body from the A year that eats it, the stages of each stage pass through it until it reaches the stage where food turns into protein, sugar and fat, which the body needs permanently. There are a lot of people who have no idea about the stages of digestion. They think gastrointestinal digest is just – and they do not know what happens during eating. In this article, however, all stages of food passage will be clarified.
Stage of digestion in the mouth
The first sign to start digestion is saliva, saliva occurs when you see the food or when you smell the smell of a favorite food. When this happens, this is the first stage of digestion, it occurs in the mouth, the important functions of saliva in the mouth to make the food wet during The mouth is secreted by three pairs of salivary glands, the parotid glands, the submandibular gland, and the sublingual gland. These glands together produce about a liter and a half liter Of saliva daily, saliva contains p It also contains saliva called an enzyme called amylase. This enzyme helps digest foods that contain carbohydrates such as potatoes and rice, and can not ignore the importance of the tongue in the process of grinding and crushing Food The tongue is the center of taste in the human body, without which the human can not know the taste of food, not to mention his task to move food during the process of chewing and grinding, all these stages are only in the first digestive processes that occur in the mouth.
Stage of gastric digestion
After the food is crushed and swallowed, the second stage is the arrival of food to the stomach. The stomach mixes the food with the food. The stomach produces about 2000-2500 mm of infectious juices every day. The infectious juices contain acids that increase the digestion of food. Food buffer.
Digestion stage in the small intestine
The small intestine is the main place where digestion of food and secretion of certain enzymes that are produced from the pancreas and the wall of the small intestine, and the function of these enzymes are the conversion of food to the molecules of fat, sugar and proteins, which are absorbed through the wall of the small intestine to feed on the tissues and cells in the body, Food in the small intestine at a rate of 1 cm every minute, where the process of digestion in the intestine of about 3 – 8 hours until the process is completed in the small intestine and transferred to the large intestine.
Stage of digestion in the large intestine
The large intestine is approximately 1.5 meters long and consists of cecum, colon and rectum. The large intestine is the site of absorption of water, salts and complex vitamins that keep digestion in the small intestine. Through the work of bacteria, approximately 500-1000 mm of food is absorbed The colon is moved daily and 50-200 mm is left with the stool; the contents of the colon move at a rate of 5 cm per hour so that the colon can absorb some nutrients. Large quantities of the mucous membranes of the large intestine are secreted in order to protect them from bacteria or abrasion, and also to provide the mediator to collect the stool, which follows the way out of the body through the rectum and then the anus.
Dyspepsia
The food molecules that have been converted into the small intestine of proteins, sugars and fats that are absorbed through the intestine are transferred to the bloodstream until they reach the liver. More molecules are disassembled. Some of these molecules are converted into fuel that is stored in the body until needed. mechanism.
Natural digestion is supposed to occur quickly and effectively in order to obtain nutritional value from food analysis. If digestion is not rapid, it may cause undigested food to ferment, leading to poor absorption of nutrients and poor digestion. Dyspepsia? Digestive is the term used to describe discomfort in the stomach after a meal, where the person feels either stomach pain or nausea, flatulence and excessive burping, and the most common causes of poor digestion is inflammation of the foam membrane, or cause Sore stomach, or acute or simple acidity.
In order to avoid bad digestion, it is necessary to know what causes and keep away from them. For example, not chewing food in the mouth well and this makes the task of the stomach difficult and can be difficult to swallow, causing choking, and eating quickly may cause a lot of problems and not allow the stomach to secrete Acids that help digestion, or even the possibility of salivary glands in the mouth secret saliva, which plays an important role in the process of chewing and swallowing, and it is also bad to eat large meals so that the digestive system can not achieve a large amount of food at once, so whenever the meal Great whenever Ka The ability of the digestive system is not good, which causes problems in digestion. It is also important not to drink large quantities of fluids while eating. This reduces the secretion of acids and enzymes that help digestion. Without these enzymes and acids, digestion is not effective. Also, meals that are late at night or shortly before sleep make digestion slow, digestive problems, stress and fatigue disrupt proper digestion.
One of the bad symptoms of bad digestion is the lack of energy that the body needs to practice various activities, because undigested food properly leads to the transfer of nutrients in less quantities to the circulatory system, and the body lacks the essential vitamins and minerals that come through digestion, Lack of food can cause a lot of long-term consequences such as heart disease and cancer. In addition, poor digestion or slow digestion leads to food fermentation in the intestines and leads to problems in the production of abdominal wind, swelling and discomfort, and may lead to pain in the Stomach, and lead to problems in constipation or diarrhea.