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The nerve bundles of the submucosal plexus are finer than those of the myenteric plexus. Its function is to innervate cells in the epithelial layer and the smooth muscle of the muscularis mucosae. 14% of submucosal plexus neurons are sensory neurons – Dogiel type II, also known as enteric primary afferent neurons or intrinsic primary afferent ...
Layers of the Alimentary Canal.The wall of the alimentary canal has four basic tissue layers: the mucosa, submucosa, muscularis, and serosa. The enteric nervous system in humans consists of some 500 million neurons [11] (including the various types of Dogiel cells), [1] [12] 0.5% of the number of neurons in the brain, five times as many as the one hundred million neurons in the human spinal ...
The submucosa (or tela submucosa) is a thin layer of tissue in various organs of the gastrointestinal, respiratory, and genitourinary tracts. It is the layer of dense irregular connective tissue that supports the mucosa (mucous membrane) and joins it to the muscular layer, the bulk of overlying smooth muscle (fibers running circularly within layer of longitudinal muscle).
Between the two muscle layers is the myenteric plexus (Auerbach's plexus). This controls peristalsis. Activity is initiated by the pacemaker cells (interstitial cells of Cajal). The gut has intrinsic peristaltic activity (basal electrical rhythm) due to its self-contained enteric nervous system.
The myenteric plexus (or Auerbach's plexus) provides motor innervation to both layers of the muscular layer of the gut, having both parasympathetic and sympathetic input (although present ganglion cell bodies belong to parasympathetic innervation, fibers from sympathetic innervation also reach the plexus), whereas the submucous plexus provides secretomotor innervation to the mucosa nearest the ...
About Wikipedia; Contact us; Contribute Help; Learn to edit; ... Submucosal may refer to: Submucous plexus;
Epidural venous plexus; External vertebral venous plexuses; Internal vertebral venous plexuses; Pampiniform venous plexus; Prostatic venous plexus; Pterygoid plexus; Rectal venous plexus; Soleal venous plexus; Submucosal venous plexus of the nose; Suboccipital venous plexus; Uterine venous plexus; Vaginal venous plexus; Venous plexus of ...
Histological examination of the wall of the colon from patients with obstructed defecation show that there is a reduction of enteric neurons in the submucosal plexus and loss of enteric glial cells in the myenteric plexus and submucosal plexus. [43] [45] Enteric glial cells comprise most of the cells in the enteric ganglia. [43]