Longitudinal Muscle Layer of Stomach

Longitudinal Muscle Layer of Stomach The structure indicated is the outer longitudinal muscle layer of the stomach. The stomach walls consists of four parts: Mucosa Submucosa Muscularis externa Serosa The muscularis externa is the muscular layer of the gastrointestinal wall. In the stomach it consists of three layers: Inner oblique layer Middle circular layer Outer longitudinal layer Between the middle circular layer and outer longitudinal muscular layer lies Auerbach’s plexus (the myenteric plexus). Learn more about the digestive system in this tutorial