What term describes the involumtary muscle contractions of esophagus?

The involuntary muscle contractions of the esophagus are known as peristalsis. Peristalsis is a coordinated, wave-like contraction of the muscles of the esophagus that propels food and liquids from the mouth to the stomach. It is a vital process that allows us to swallow and transport food and liquids into the digestive system.