The Probert Encyclopaedia of Medicine

PYLORUS

The pylorus is the sphincter muscle which serves as the valve controlling the lower opening of the stomach, where it empties into the duodenum. The pylorus only allows the food through after it has been properly processed by the digestive juices of the stomach. Once through the pylorus, the food is only partially digested. Further digestion takes place in the upper portion of the small intestine called the duodenum.
Research Pylorus