👉 The term "epivalve" is a medical term that refers to the opening in the lumen of the esophagus, which is responsible for the movement and contractions of the muscles that help to push food through the esophagus. This opening is also known as the valve of Gastroesophageal Reflux Disease (GERD) or the valve of pyloric stenosis. The epivalve plays a crucial role in regulating the flow of stomach contents into the esoph
