is the involuntary movement of the muscles that move food through the digestive system.

Answer 1

This involuntary movement is called peristalsis. It is a wave-like muscle contraction that helps push food down the esophagus, through the stomach, and along the intestines for digestion and absorption of nutrients. Peristalsis helps regulate the movement of food and prevents it from getting stuck or moving too quickly through the digestive tract.