Submucosal plexus
The submucosal plexus (or Meissner plexus according to Georg Meissner ) is, in addition to the myenteric plexus (Auerbach plexus), part of the enteric nervous system ( intramural nervous system), which in turn belongs to the vegetative nervous system . These are accumulations of ganglia and the nerve fibers emanating from them in the submucosa , i.e. between the mucous membrane and the muscular layer of the wall of the digestive system . Sometimes the submucosal plexus is further divided into an outer and an inner part. The internal submucosal plexus lies directly under the mucous membrane and corresponds to the Meissner plexus in the narrower sense. The external submucosal plexus ( Shabadsch plexus ) lies on the inside of the circular muscle layer.
The submucosal plexus controls the secretion of the glands of the stomach and intestines primarily independently of the CNS . In addition, movements of the intestinal epithelium and immunological processes are regulated. The external submucosal plexus also participates in the control of intestinal motor skills . However, the enteric nervous system is not completely independent. The activity of the plexus and thus the secretion performance can be influenced via the parasympathetic nervous system (increases) and the sympathetic nervous system (inhibits).
Individual evidence
- ^ A b Karl Zilles, Bernhard Tillmann: Anatomie . Springer, Berlin 2011, ISBN 978-3-540-69483-0 , pp. 773 .