Pylorus: Definition, Uses, and Clinical Overview
The **Pylorus** is the outlet region of the stomach where it meets the first part of the small intestine (the duodenum). It includes a muscular valve-like structure called the **pyloric sphincter**, which helps regulate stomach emptying. In clinical care, the Pylorus is discussed in disorders of nausea, vomiting, obstruction, and abnormal gastric motility. It is also a key landmark in endoscopy, imaging, and several gastrointestinal (GI) surgical procedures.