Longitudinal Muscle Layer of Stomach
The structure indicated is the outer longitudinal muscle layer of the stomach.
The stomach walls consists of four parts:
- Muscularis externa
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