![This is blank.](https://digitalhistology.org/wp-content/themes/histology-unified/imgs/trans.png)
Overview: Muscularis externa
Muscularis externa of the stomach has inner oblique (an inconsistent layer), middle circular, and outer longitudinal layers; only the latter two layers are seen here. The myenteric (Auerbach’s) plexus, located between circular and longitudinal muscle layers, provides fibers from the autonomic nervous system to muscularis externa. A serosa is the outermost tunic. Trichrome stain, 100x, 800x
![Mucosa <p>Muscularis externa of the stomach has inner oblique (an inconsistent layer), middle circular, and outer longitudinal layers; only the latter two layers are seen here. The myenteric (Auerbach’s) plexus, located between circular and longitudinal muscle layers, provides fibers from the autonomic nervous system to muscularis externa. A serosa is the outermost tunic. Trichrome stain, 100x, 800x</p>](https://digitalhistology.org/wp-content/uploads/2017/10/Or.Dig_.Tub_.Stom_.Ov-6-1-ping.png)
Mucosa
Muscularis externa of the stomach has inner oblique (an inconsistent layer), middle circular, and outer longitudinal layers; only the latter two layers are seen here. The myenteric (Auerbach’s) plexus, located between circular and longitudinal muscle layers, provides fibers from the autonomic nervous system to muscularis externa. A serosa is the outermost tunic. Trichrome stain, 100x, 800x
![Submucosa <p>Muscularis externa of the stomach has inner oblique (an inconsistent layer), middle circular, and outer longitudinal layers; only the latter two layers are seen here. The myenteric (Auerbach’s) plexus, located between circular and longitudinal muscle layers, provides fibers from the autonomic nervous system to muscularis externa. A serosa is the outermost tunic. Trichrome stain, 100x, 800x</p>](https://digitalhistology.org/wp-content/uploads/2017/10/Or.Dig_.Tub_.Stom_.Ov-6-2-ping.png)
Submucosa
Muscularis externa of the stomach has inner oblique (an inconsistent layer), middle circular, and outer longitudinal layers; only the latter two layers are seen here. The myenteric (Auerbach’s) plexus, located between circular and longitudinal muscle layers, provides fibers from the autonomic nervous system to muscularis externa. A serosa is the outermost tunic. Trichrome stain, 100x, 800x
![Muscularis externa <p>Muscularis externa of the stomach has inner oblique (an inconsistent layer), middle circular, and outer longitudinal layers; only the latter two layers are seen here. The myenteric (Auerbach’s) plexus, located between circular and longitudinal muscle layers, provides fibers from the autonomic nervous system to muscularis externa. A serosa is the outermost tunic. Trichrome stain, 100x, 800x</p>](https://digitalhistology.org/wp-content/uploads/2017/10/Or.Dig_.Tub_.Stom_.Ov-6-3-ping.png)
Muscularis externa
Muscularis externa of the stomach has inner oblique (an inconsistent layer), middle circular, and outer longitudinal layers; only the latter two layers are seen here. The myenteric (Auerbach’s) plexus, located between circular and longitudinal muscle layers, provides fibers from the autonomic nervous system to muscularis externa. A serosa is the outermost tunic. Trichrome stain, 100x, 800x
![- Middle circular layer <p>Muscularis externa of the stomach has inner oblique (an inconsistent layer), middle circular, and outer longitudinal layers; only the latter two layers are seen here. The myenteric (Auerbach’s) plexus, located between circular and longitudinal muscle layers, provides fibers from the autonomic nervous system to muscularis externa. A serosa is the outermost tunic. Trichrome stain, 100x, 800x</p>](https://digitalhistology.org/wp-content/uploads/2017/10/Or.Dig_.Tub_.Stom_.Ov-6-4-ping.png)
- Middle circular layer
Muscularis externa of the stomach has inner oblique (an inconsistent layer), middle circular, and outer longitudinal layers; only the latter two layers are seen here. The myenteric (Auerbach’s) plexus, located between circular and longitudinal muscle layers, provides fibers from the autonomic nervous system to muscularis externa. A serosa is the outermost tunic. Trichrome stain, 100x, 800x
![- Outer longitudinal layer <p>Muscularis externa of the stomach has inner oblique (an inconsistent layer), middle circular, and outer longitudinal layers; only the latter two layers are seen here. The myenteric (Auerbach’s) plexus, located between circular and longitudinal muscle layers, provides fibers from the autonomic nervous system to muscularis externa. A serosa is the outermost tunic. Trichrome stain, 100x, 800x</p>](https://digitalhistology.org/wp-content/uploads/2017/10/Or.Dig_.Tub_.Stom_.Ov-6-5-ping.png)
- Outer longitudinal layer
Muscularis externa of the stomach has inner oblique (an inconsistent layer), middle circular, and outer longitudinal layers; only the latter two layers are seen here. The myenteric (Auerbach’s) plexus, located between circular and longitudinal muscle layers, provides fibers from the autonomic nervous system to muscularis externa. A serosa is the outermost tunic. Trichrome stain, 100x, 800x
![- Myenteric (Auerbach's) plexus <p>Muscularis externa of the stomach has inner oblique (an inconsistent layer), middle circular, and outer longitudinal layers; only the latter two layers are seen here. The myenteric (Auerbach’s) plexus, located between circular and longitudinal muscle layers, provides fibers from the autonomic nervous system to muscularis externa. A serosa is the outermost tunic. Trichrome stain, 100x, 800x</p>](https://digitalhistology.org/wp-content/uploads/2017/10/Or.Dig_.Tub_.Stom_.Ov-6-8-ping.png)
- Myenteric (Auerbach's) plexus
Muscularis externa of the stomach has inner oblique (an inconsistent layer), middle circular, and outer longitudinal layers; only the latter two layers are seen here. The myenteric (Auerbach’s) plexus, located between circular and longitudinal muscle layers, provides fibers from the autonomic nervous system to muscularis externa. A serosa is the outermost tunic. Trichrome stain, 100x, 800x
![- Neuron cell bodies <p>Muscularis externa of the stomach has inner oblique (an inconsistent layer), middle circular, and outer longitudinal layers; only the latter two layers are seen here. The myenteric (Auerbach’s) plexus, located between circular and longitudinal muscle layers, provides fibers from the autonomic nervous system to muscularis externa. A serosa is the outermost tunic. Trichrome stain, 100x, 800x</p>](https://digitalhistology.org/wp-content/uploads/2017/10/Or.Dig_.Tub_.Stom_.Ov-6-9-ping.png)
- Neuron cell bodies
Muscularis externa of the stomach has inner oblique (an inconsistent layer), middle circular, and outer longitudinal layers; only the latter two layers are seen here. The myenteric (Auerbach’s) plexus, located between circular and longitudinal muscle layers, provides fibers from the autonomic nervous system to muscularis externa. A serosa is the outermost tunic. Trichrome stain, 100x, 800x
![- Peripheral nerves <p>Muscularis externa of the stomach has inner oblique (an inconsistent layer), middle circular, and outer longitudinal layers; only the latter two layers are seen here. The myenteric (Auerbach’s) plexus, located between circular and longitudinal muscle layers, provides fibers from the autonomic nervous system to muscularis externa. A serosa is the outermost tunic. Trichrome stain, 100x, 800x</p>](https://digitalhistology.org/wp-content/uploads/2017/10/Or.Dig_.Tub_.Stom_.Ov-6-10-ping.png)
- Peripheral nerves
Muscularis externa of the stomach has inner oblique (an inconsistent layer), middle circular, and outer longitudinal layers; only the latter two layers are seen here. The myenteric (Auerbach’s) plexus, located between circular and longitudinal muscle layers, provides fibers from the autonomic nervous system to muscularis externa. A serosa is the outermost tunic. Trichrome stain, 100x, 800x
![Serosa <p>Muscularis externa of the stomach has inner oblique (an inconsistent layer), middle circular, and outer longitudinal layers; only the latter two layers are seen here. The myenteric (Auerbach’s) plexus, located between circular and longitudinal muscle layers, provides fibers from the autonomic nervous system to muscularis externa. A serosa is the outermost tunic. Trichrome stain, 100x, 800x</p>](https://digitalhistology.org/wp-content/uploads/2017/10/Or.Dig_.Tub_.Stom_.Ov-6-6-ping.png)
Serosa
Muscularis externa of the stomach has inner oblique (an inconsistent layer), middle circular, and outer longitudinal layers; only the latter two layers are seen here. The myenteric (Auerbach’s) plexus, located between circular and longitudinal muscle layers, provides fibers from the autonomic nervous system to muscularis externa. A serosa is the outermost tunic. Trichrome stain, 100x, 800x
![- Mesothelium <p>Muscularis externa of the stomach has inner oblique (an inconsistent layer), middle circular, and outer longitudinal layers; only the latter two layers are seen here. The myenteric (Auerbach’s) plexus, located between circular and longitudinal muscle layers, provides fibers from the autonomic nervous system to muscularis externa. A serosa is the outermost tunic. Trichrome stain, 100x, 800x</p>](https://digitalhistology.org/wp-content/uploads/2017/10/Or.Dig_.Tub_.Stom_.Ov-6-7-ping.png)
- Mesothelium
Muscularis externa of the stomach has inner oblique (an inconsistent layer), middle circular, and outer longitudinal layers; only the latter two layers are seen here. The myenteric (Auerbach’s) plexus, located between circular and longitudinal muscle layers, provides fibers from the autonomic nervous system to muscularis externa. A serosa is the outermost tunic. Trichrome stain, 100x, 800x
![Area shown in next image <p>Muscularis externa of the stomach has inner oblique (an inconsistent layer), middle circular, and outer longitudinal layers; only the latter two layers are seen here. The myenteric (Auerbach’s) plexus, located between circular and longitudinal muscle layers, provides fibers from the autonomic nervous system to muscularis externa. A serosa is the outermost tunic. Trichrome stain, 100x, 800x</p>](https://digitalhistology.org/wp-content/uploads/2017/10/Or.Dig_.Tub_.Stom_.Ov-6-11-ping.png)
Area shown in next image
Muscularis externa of the stomach has inner oblique (an inconsistent layer), middle circular, and outer longitudinal layers; only the latter two layers are seen here. The myenteric (Auerbach’s) plexus, located between circular and longitudinal muscle layers, provides fibers from the autonomic nervous system to muscularis externa. A serosa is the outermost tunic. Trichrome stain, 100x, 800x