Human esophagus: important muscle conductor
The esophagus is a muscle conducting organ, located between the lower extremity of the laryngopharynx and the upper stomach, which is part of the digestive tract joining the pharynx to the stomach.
Its main function is to bring food to the stomach.
The esophagus is hollow and formed by three layers: mucosa, submucosa and muscle.
The mucous layer has connective tissue, blood vessels and mucous glands. The submucosal layer contains small glands that release their secretions towards the esophagus, these secretions act against infectious agents from the external environment. The muscle layer divides into outer and inner.
Food is delivered to the stomach through peristaltic movements (involuntary movements), which cause the bolus to reach the stomach.
- The most common diseases that affect this organ are: esophageal cancer (mainly caused by smoking and alcoholism) and gastroesophageal reflux (when gastric juices reach the esophagus).