Muscular layer

The tunica muscularis is in hollow organs of the fine tissue layer beneath the submucosa. With the exception of the upper third of the esophagus is the muscular coat of smooth muscle. The muscle bundles form spirals with circular flow-out on the inside and the longitudinal course of distance on the outer side. In anatomy, the two layers are circulare as stratum and stratum called longitudinal.

Between the two muscle layers runs a narrow layer of connective tissue with many blood and lymph vessels. In this layer there is a plexus of the enteric nervous system, which is referred to in the body part of the digestive tract as the myenteric plexus ( Auerbach ). The contractions of the muscles of the tunica muscularis are used to transport the food through the gastrointestinal tract.

• Histology
• Smooth muscle