The esophagus forms part of the upper section of the digestive tract. It allows food to pass from the pharynx, located at the back of the mouth, to the stomach.

"Ultra-processed foods and higher risk of mouth, throat and esophagus cancers." ScienceDaily. ScienceDaily, 21 November 2023. <www.sciencedaily.com / releases / 2023 / 11 / 231121220959.htm>.

They depend on organs in the mouth and chest, such as the esophagus and tongue, to help chew, move food, and perform primary digestive functions. The abdomen also includes the urinary system.