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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.
When the stomach is empty, and not distended, the lining is thrown up into folds called rugae. After eating, these folds flatten, and the stomach is able to distend greatly. The stomach has three anatomical regions: 1  cardiac, which contains mucous secreting glands (called cardiac glands) and is closest to the oesophagus.2  fundus, the body or largest part of the stomach which contain the gastric (fundic) glands. 3  pyloric, which secretes two types of mucus, and the hormone gastrin.hen the stomach is empty, and not distended, the lining is thrown up into folds called rugae. After eating, these folds flatten, and the stomach is able to distend greatly. The stomach has three anatomical regions: 1  cardiac, which contains mucous secreting glands (called cardiac glands) and is closest to the oesophagus.