As part of the human digestive system
, the esophagus is the segment that connects the pharynx
to the stomach, through which chewed food passes. It is approximately 25cm in length and 2cm in diameter. The content of the esophagus is transported via muscle
contractions that are called peristalsis. While the esophagus has a sphincter
at its upper end to limit the risks of regurgitation, it does not have one at the lower end, called the cardia of the stomach.
Original article published by
. Translated by christelle.b