What term describes the sequential contraction of muscles that propels food into the stomach?

Peristalsis is the term used to describe the coordinated, wave-like contractions of smooth muscles in the digestive tract that propel food along the esophagus and through the intestines. This process starts when food is swallowed and is crucial for moving food from the mouth to the stomach and further along the digestive system. It involves alternating contractions and relaxations of muscles, which create a rhythmic movement that helps mix and push the contents through the digestive tract.

Chyme refers to the semi-liquid mixture of partially digested food and digestive juices found in the stomach and small intestine following digestion. Mastication is the process of chewing food, breaking it down into smaller pieces to facilitate digestion. Emulsification is the process of breaking down fats into smaller droplets, improving their dispersion in water for better digestion. Understanding these terms helps in grasping the complexities of digestive processes and the specific functions each element serves in nutrition.