The digestive system is one of the most important devices in the body, which can not be dispensed in any way is the main source of energy supply and the various materials needed to carry out various biological processes in the cells and throughout the body, and the digestive system is one of the precision devices in the body Which is considered a miracle in the human body, which scientists could not make such a great accuracy and the integration of parts with each other.
The digestive system begins with the mouth, which is the entrance to the digestive system and the energy input into the human body. As we enter food into the body, the digestion process begins to chew the food. When we grind food with teeth, we perform the first cracking of food in order to facilitate digestion. The duration of chewing food in the mouth increased the efficiency of digestion later, and the salivary glands in the mouth to produce saliva during the process of chewing, which is mixing with food and break the main, especially for starchy substances to simpler sugars and the player helps to process the taste of food and Monster swallowing as it does moisten food.
After swallowing food, the food goes to the pharynx. The tongue of the oyster inside the pharynx closes the entrance to the larynx to prevent food from entering it and causing suffocation. The food is directed to the esophagus, which is a hollow tube of the stomach. The stomach begins with the main digestion process as the stomach expands by the amount of food inside it and digest the food through the movement of the muscles and mix them with the infectious storm, which consists of ten of the hydrochloric acid and the rest of the water, then disassemble the protein and convert it Li simple materials can be used by cells.
Then the food goes to the small intestine, which excretes the juices on the materials coming from the stomach, pancreatic juice, yellow and intestinal enzymes, so that in the small intestine complete the process of digestion of nutrients from proteins and sugars and fats, and is absorbed inside the food, water, salts and various substances needed by The body, and the length of the small intestine, seven meters wrapped inside the abdomen in addition to the presence of protrusions in order to increase the efficiency of absorption of food, and ultimately the food or the remainder of the waste to the large intestine where the absorption of what remains Of water in addition to the analysis of food by bacteria in the stomach above with and piling up of waste in the large intestine in order to remove them through the anus, which is the director of the digestive system.