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胃肠器官是人体内对从外界摄取的食物进行储存、消化和吸收的场所。成人的胃肠道长度平均为7～9米,是身高的4～5倍,所以,食物在胃肠内经消化、吸收,直到将废物排出体外所需时间很长,这样,便为人体充分消化、吸收食物的有用成分创造了有利条件。胃肠在消化和吸收食物的过程中,会不断地运动。其运动由神经系统支配,胃内食物对胃组织的刺激会传入中枢神经系统,中枢神经系统反过来再支配胃肠器官的植物神经发挥作用,而引起胃肠器官的收缩与舒张,这就会促进食物运动,从胃逐渐到小肠、大肠,最后
Gastrointestinal organ is the body of food intake from the outside world for storage, digestion and absorption of the place. The average length of the gastrointestinal tract in adults is 7 to 9 meters, which is 4 to 5 times the height. Therefore, the food is digested and absorbed in the gastrointestinal tract until the waste is excreted for a long time, so that the human body can fully digest , The absorption of useful ingredients of food has created favorable conditions. Gastrointestinal in the process of digestion and absorption of food, will continue to exercise. Its movement is dominated by the nervous system, stomach food stimulation of gastric tissue will be transmitted to the central nervous system, the central nervous system which in turn dictates the role of the gastrointestinal organs of the autonomic nervous system, causing gastrointestinal organs contraction and relaxation, which Will promote food movement, gradually from the stomach to the small intestine, large intestine, and finally