Name = PAGENAME
Caption = LAYERS:
Caption2 = Endoscopy and radial
endoscopic ultrasoundimages of submucosal tumour in mid- esophagus. The submucosa is seen as a dark ring on the ultrasound image.
DorlandsPre = s_27
DorlandsSuf = 12765896
gastrointestinal tract, the submucosa is the layer of loose connective tissuethat supports the mucosa, as well as joins the mucosa to the bulk of underlying smooth muscle(fibers running circularly within layer of longitudinal muscle).
Blood vessels, lymphatic vessels, and nerves(all supplying the mucosa) will run through here.
parasympatheticganglia are scattered around forming the submucosal plexus(or "Meissner's plexus") where preganglionicparasympathetic neurons synapse with postganglionicnerve fibers that supply the muscularis mucosae.
The submucosa in endoscopy
Identification of the submucosa plays an important role in diagnostic and therapeutic
endoscopy, where special fibre-optic cameras are used to perform procedures on the gastrointestinal tract. Abnormalities of the submucosa, such as gastrointestinal stromal tumors, usually show integrity of the mucosal surface.
The submucosa is also identified in
endoscopic ultrasoundto identify the depth of tumours and to identify other abnormalities. An injection of dye, saline, or epinephrineinto the submucosa is imperative in the safe removal of certain polyps.
resectioninvolves removal of the mucosal layer, and in order to be done safely, a submucosal injection of dye is performed to ensure integrity at the beginning of the procedure.
Small intestinal submucosa
* - "Mammal, whole system (LM, Low)"
* - "Tissues, Layers, and Organs: transverse section of rat gut"
* - "Duodenum and Jejunum"
* [http://courseweb.edteched.uottawa.ca/medicine-histology/English/Gastrointestinal/Stomach22.htm Histology at edteched.uottawa.ca]
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