Pyloric branch of anterior vagal trunk

A pyloric branch of vagus nerve comes off from the anterior vagal trunk and innervates the pyloric region of the stomach.

The anterior vagal trunk–as it passes through the esophageal hiatus of the diaphragm–gives off several branches near the gastroesophageal junction. These include the anterior gastric branches, the anterior nerve of lesser curvature, hepatic and pyloric branches. Amongst them, the anterior nerve of lesser curvature, which continues to descend along the lesser curvature of the stomach, gives off a pyloric branch. It runs inferomedial to the antrum and innervates the pylorus, before running superiorly to join the hepatic plexus, for innervating the liver parenchyma and vasculature, biliary tree and gall bladder, and the structures in the free edge of lesser omentum. An additional pyloric branch also comes off directly from the hepatic plexus.