The esophagus is a tubular, elongated organ that plays an important role in transporting food and liquids to the stomach. Several conditions can negatively affect the esophagus, including acid reflux, ...

At either end of the esophagus the ciliated epithelium gives rise to esophageal glands. The upper esophagus is derived from branchial arches 4, 5, and 6, but the derivation of the lower esophagus is ...