esophagus
Esophagus (Esophagus), also known as esophagus, human and animal digestive tract part of the above connected to the pharynx, the following connected stomach, close to the spine of the ventral side, with the function of transporting food. The esophagus is a hollow channel composed of muscle, in the end of the end of the stomach with a sphincter to ensure that the stomach will not countercurrent to the esophagus. The esophagus is flattened in peacetime, and when the food passes through it. The food does not fall into the stomach by gravity of the earth, and is carried out by waves of the muscles of the esophagus as waves, forcing the food into the stomach, and the esophagus secreting a mucus so that the food can be easily passed. Esophageal if the tumor is esophageal cancer. Smoking, chewing betel nuts and heavy drinking will increase the risk of induction. Other related pathology and gastroesophageal reflux, and may lead to esophagitis, esophageal stricture and throat inflammation, cough and so on. ...