What is the function of oesophagus?

The esophagus is the hollow, muscular tube that carries food and liquids from the throat to the stomach. The esophagus runs through the middle of the chest cavity and has two sphincters that control opening and closing. The primary function of the esophagus is to transport food from the mouth to the stomach. Acid reflux is a very common condition that affects the esophagus.

The esophagus serves to pass food and liquids from the mouth down to the stomach. This is accomplished by periodic contractions (peristalsis) instead of gravity. With vomiting, these contractions are reversed, allowing stomach contents to be returned to the mouth to spit out.