Gastric distension is potentially dangerous since it can cause the contents of the stomach to come up the esophagus (gullet) and spill back down into the lungs.
The posterior margins of these ganglions are united by a stout, shortish commissure, composed of two or three cords, which, passing below the gullet, form the great oesophageal collar.
A precise profile of the tooth (including gullet area, hook angle and top clearance angle) must be maintained for proper saw operation and wood chip removal.