| Submucosa | |
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| LAYERS: serosa longitudinal muscle myenteric plexus circular muscle submucosal plexus submucosal mucosal |
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| Endoscopy and radial endoscopic ultrasound images of submucosal tumour in mid-esophagus. In Anatomy, a serous membrane (or serosa) is a smooth membrane consisting of a thin layer of cells which excrete Serous fluid The muscular coat ( muscular layer, muscular fibers, muscularis propria, muscularis externa) is a region of Muscle in many organs Part of the Enteric nervous system, Auerbach's Plexus (or myenteric plexus) exists between the longitudinal and circular layers of Muscularis externa The muscular coat ( muscular layer, muscular fibers, muscularis propria, muscularis externa) is a region of Muscle in many organs The nerves of the Small intestines are derived from the plexuses of Parasympathetic nerves around the Superior mesenteric artery. The mucous membranes (or mucosae; singular mucosa) are linings of mostly endodermal origin covered in Epithelium, which are involved in Endoscopic ultrasound is a medical procedure in which an endoscopically directed Ultrasound is used to obtain images of the internal organs in the The esophagus or oesophagus (see American and British English spelling differences) sometimes known as the gullet, is an organ in The submucosa is seen as a dark ring on the ultrasound image. | |
| Dorlands/Elsevier | s_27/12765896 |
In the gastrointestinal tract, the submucosa is the layer of loose connective tissue that supports the mucosa, as well as joins the mucosa to the bulk of underlying smooth muscle (fibers running circularly within layer of longitudinal muscle). Elsevier, the world's largest Publisher of Medical and Scientific literature, forms part of the Reed Elsevier group Areolar tissue (a type of "loose connective tissue" exhibits loosely organized fibers abundant blood vessels and a lot of seemingly empty space The mucous membranes (or mucosae; singular mucosa) are linings of mostly endodermal origin covered in Epithelium, which are involved in Smooth muscle is a type of non- Striated muscle, found within the Tunica media layer of large and small Arteries and Veins, the bladder
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Contents
Blood vessels, lymphatic vessels, and nerves (all supplying the mucosa) will run through here. The blood vessels are part of the Circulatory system and function to transport Blood throughout the body The lymphatic system in Vertebrates is a network of conduits that carry a clear fluid called Lymph. A nerve is an enclosed cable-like bundle of peripheral Axons (the long slender projections of Neurons.
Tiny parasympathetic ganglia are scattered around forming the submucosal plexus (or "Meissner's plexus") where preganglionic parasympathetic neurons synapse with postganglionic nerve fibers that supply the muscularis mucosae. The parasympathetic Nervous system ( PSNS) is a division of the Autonomic nervous system (ANS along with the Sympathetic nervous system The nerves of the Small intestines are derived from the plexuses of Parasympathetic nerves around the Superior mesenteric artery. In the Autonomic nervous system, fibers from the CNS to the ganglion are known as preganglionic fibers. In the Autonomic nervous system, fibers from the Ganglion to the effector organ are called postganglionic fibers. The lamina muscularis mucosae (or "muscularis mucosa" is the thin layer of Smooth muscle found in most parts of the Gastrointestinal tract, located
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. Endoscopy means looking inside and typically refers to looking inside the body for medical reasons using an instrument called an endoscope. An optical fiber (or fibre) is a Glass or Plastic fiber that carries Light along its length Abnormalities of the submucosa, such as gastrointestinal stromal tumors, usually show integrity of the mucosal surface. A gastrointestinal stromal tumor ( GIST) is a rare Tumor of the Gastrointestinal tract (1-3% of all gastrointestinal malignancies In Mathematics, specifically in Topology, a surface is a Two-dimensional Manifold.
The submucosa is also identified in endoscopic ultrasound to identify the depth of tumours and to identify other abnormalities. Endoscopic ultrasound is a medical procedure in which an endoscopically directed Ultrasound is used to obtain images of the internal organs in the An injection of dye, saline, or epinephrine into the submucosa is imperative in the safe removal of certain polyps. A dye can generally be described as a Colored substance that has an affinity to the substrate to which it is being applied A polyp is an abnormal growth of tissue ( Tumor) projecting from a Mucous membrane.
Endoscopic mucosal resection involves 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.
See also
Additional images
 Bladder. Small Intestinal Submucosa (SIS Small intestinal submucosa (SIS is a common non- immunogenic material used in several Clinical applications |
 Stomach. |
 Section of the human esophagus. The esophagus or oesophagus (see American and British English spelling differences) sometimes known as the gullet, is an organ in Moderately magnified. |
 Vertical section of bladder wall. |
 General structure of the gut wall showing the submucosa. |
External links
- Organology at UC Davis Digestive/mammal/system1/system5 - "Mammal, whole system (LM, Low)"
- submucosa at eMedicine Dictionary
- Histology at BU 00102loa - "Tissues, Layers, and Organs: transverse section of rat gut"
- Physiology at MCG 6/6ch1/s6ch1_9
- Histology at OU 55_11
- Anatomy Atlases - Microscopic Anatomy, plate 10.193 - "Duodenum and Jejunum"
- Histology at edteched.uottawa.ca
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