The process of digestion primarily involves various organs and muscles, such as the esophagus, stomach, small and large intestines, and associated muscles in the gastrointestinal tract, including the smooth muscles responsible for peristalsis. These muscles work together to move food along the digestive system, facilitate the mixing and breakdown of food, and assist in the absorption of nutrients.

If you have a specific question or are looking for information on a particular muscle or aspect of digestion, please provide additional details or clarify the term you’re inquiring about, and I’d be happy to provide more information.