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What is gastroparesis? Gastroparesis, also called delayed gastric emptying, is a disorder that slows or stops the movement of food from the stomach to the small intestine. Normally, the muscles of the stomach, which are controlled by the vagus nerve, contract to break up food and move it through the gastrointestinal (GI) tract.
Gastric Motility: Filling and Emptying. Contractions of gastric smooth muscle serves two basic functions: 1  ingested food is crushed, ground and mixed, liquefying it to form what is called chyme.  chyme is forced through the pyloric canal into the small intestine, a process called gastric emptying.