Findings

In this high-power view of the muscularis propria, the parasympathetic ganglion cells of the myenteric plexus of Auerbach are evident between smooth muscle layers.

Comment

The intrinsic innervation of the digestive tract by the myenteric plexus is responsible for peristalsis. The submucosal plexus of Meissner, found in the connective tissue of the submucosa, is responsible for segmental contraction.

Preparation

Paraffin section, hematoxylin and eosin

View

High-power light microscopy

Specimen

Stomach

Image Credit

V. Eroschenko, Ph.D.
Department of Biological Sciences
WAMI Medical Program
University of Idaho