What organs does the upper digestive tract include?

The digestive tract includes the upper digestive tract and the lower digestive tract, and the upper digestive tract includes more content, such as the mouth, throat, esophagus, stomach, duodenum, etc. It is also common to have some diseases of the upper digestive tract, which has a great impact on the patient's health. Therefore, if some diseases of the upper digestive tract occur, you must go to the hospital for examination in time, identify the cause, and then treat it. In daily life, you should strengthen prevention and care.

What organs does the upper digestive tract include?

The human digestive system consists of two parts: the digestive tract and the digestive glands. The digestive tract includes the mouth, pharynx, esophagus, stomach, small intestine, large intestine, and anus. The upper digestive tract is composed of the mouth, pharynx, esophagus, stomach, and duodenum. The lower digestive tract includes the jejunum, ileum, and large intestine.

Functions of the upper digestive tract The upper digestive tract consists of the mouth, pharynx, esophagus, stomach, and duodenum. (1) Oral cavity: It consists of lips, cheeks, palate, teeth, tongue and oral glands. When the mouth is stimulated by food, the glands in the mouth secrete saliva. The chewed food is mixed with saliva and passes through the esophagus with the lubricating effect of saliva. The amylase in the saliva can partially break down carbohydrates. (2) Pharynx: It is the common passage of the respiratory tract and the digestive tract. The pharynx can be divided into three parts: nasopharynx, oropharynx, and laryngopharynx based on its passages with the nasal cavity, oral cavity, and larynx. The main function of the pharynx is to complete the complex reflex action of swallowing. (3) Esophagus: The esophagus is a long muscular tube with a total length of about 25 to 30 cm. There are three narrow parts in the esophagus, which are prone to retaining foreign objects and are also the sites where esophageal cancer is prone to occur. The main function of the esophagus is to transport food into the stomach. Secondly, it prevents air from entering the esophagus during breathing and prevents the contents of the stomach from flowing back into the esophagus.