| All gastric operations involving vagotomy included the breach of the pylorus, usually by pyloroplasty. |
| A clear catheter entered the stomach at the gastrostomy site and had passed the pylorus into the duodenum. |
| This illustrates the essential place of the closure of the pylorus by tonic contraction in the prevention of such reflux. |
| In addition, gastric lavage can actually push the gastric contents beyond the pylorus, which enhances absorption. |
| The muscle of the pylorus does, however, show the high degree of myogenic tone characteristic of other sphincters. |
| A septum of connective tissue separates the circular muscle layers of the pylorus and duodenum. |
