In the small intestine is the final food digestion and absorption ofnutrients instead. The colon or large intestine is mainly concerned withthe waste and their excretion in the form of faeces. In addition, the large intestine is responsible for the absorption of water and sodium from the stool.

The largest organ of the digestive tract, where all the (smooth) muscles were relaxed 19 to 23 feet long. With a diameter of about 1 inche, the small intestine into force less than half of them. The small intestine lies curled up in the abdomen, causing bowel loops are formed. The small intestine consists of three parts:

is the first part of the small intestine from the stomach door (the sphincter muscle at the end of the stomach), where enzymes from the pancreas and bile from the liver stimulate the digestive system.

is the middle part of the small intestine between the Flexura duodenojejunalis and the ileum. In the fasting intestine and ileum where the vast majority of digestion and absorption of food components instead. The passage of food through the intestine and ileum fasting lasts 1 to 2 hours. The acidic, liquid food is converted in an alkaline substance. Almost all the nutrients to be withdrawn from here to the liquid, with the aid of enzymes in the intestinal fluid.

is the last part of the small intestine. The outlet of this latter part (the terminal ileum) in the large intestine. It is more a functional than an anatomical valve valve structure. Of the ileocecal valve (Valva ileocaecalis) ensure that the gut contents from flowing back.



Man Gay sapiens or a bipedal primate species in the family Hominidae. Research suggests that modern humans about 200,000 years ago in Africa emerged as a species. Humans have highly developed brains, which he is capable of abstract thinking, language, introspection, problem solving and emotion. Thanks to his intelligence and upright posture, allowing the arms to be free to pick up objects and manipulate, the man much more than other species able to use tools.