What is the role of the esophagus in the digestive system?
, along with the mouth and neck, the esophagus is the beginning of a long way of food in the body. It is located in front of the spine, but behind the main task of this tube is behind the penetration and heart, to pass food through minor contractions called peristalsis, from the sphincter at the bottom of the neck to another sphincter in the stomach below. Another role of the esophagus in the digestive system is to lubricate food with mucus as it moves down into the intestine.
Before you get to the esophagus in the digestive system, food is usually well prepared for entry. Not only is he crushed and rounded at sharp edges of up to 32 teeth, but it is also disgusting through the saliva of the mouth. This liquid contains enzymes, lubricants and acid reduction needed to start the food reduction to a long seal loaf until it reaches the upper hole of the esophagus at the bottom of the neck or pharynx.
When it is connected during swallowing, this initial sphincter opens, so far the epiglottis closes the trachea leading to the lungs. This is the first employment of the esophagus in the digestive system - prevents people from breathing food or VODy. As soon as the food gets into the esophagus, itching closes and Epiglottis releases its holding on the trachea.
When food moves down around 8 inch (approximately 0.2 meters) esophagus, it is padded by four layers of contract tissue lined with mucus. The innermost layer is called tunica mucosa , followed by tunica submucosa , tunica muscularis and finally tunica serosa on the outside. These outer two layers of the esophagus are downloaded until the food reaches the lower esophagus sphincter and can enter the stomach, just below the heart. The task of two layers is to moisten food and protect the outer two layers.
Food leaves on the way of the digestive system to enter the acid denaturing bath of stomach juice in the stomach, followed by large and small intestines, then the large intestine and rectum. Along the way of enzymes and bacterial colonies of the tract break food on the cellCaling components that can then be absorbed to provide the nutrients needed for survival. On the other hand, the esophagus has no absorbent properties.
various esophageal disorders may develop, especially in smokers or heavy drinkers. Burning and digestive problems are common problems. Some experience damage to the esophagus of the esophagus, resulting in a disease of sour reflux disease. Others may develop esophageal cancer.