What is the term for the involuntary constriction and relaxation of the muscles that cause food to move down the esophagus?

Peristalsis refers to the involuntary movement by the esophagus or intestine that moves food or waste into and out of the body. The process is essentially a wave-like motion that uses contractions to move matter through.

Asked by Tom Cohen · Last updated 5 years ago · 22.1K views