| Pylorus | |
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| Outline of stomach, showing its anatomical landmarks. | |
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| Interior of the stomach. (Pylorus labeled at center left. ) | |
| Latin | valvula pylori |
| Gray's | subject #247 1164 |
| Dorlands/Elsevier | v_02/12844554 |
The pylorus (from Greek πυλωρος = "gate guard") is the region of the stomach that connects to the duodenum. Latin ( lingua Latīna, laˈtiːna is an Italic language, historically spoken in Latium and Ancient Rome. Gray's Anatomy the Respiratory apparatus ( Apparatus Respiratorius Respiratory system Respiratory apparatus Elsevier, the world's largest Publisher of Medical and Scientific literature, forms part of the Reed Elsevier group Greek (el ελληνική γλώσσα or simply el ελληνικά — "Hellenic" is an Indo-European language, spoken today by 15-22 million people mainly In Human anatomy, the stomach is a J-shaped hollow muscular organ of the Gastrointestinal tract involved in the second phase of Digestion, following In Anatomy of the Digestive system, the duodenum is a hollow jointed tube about 25-30 cm (10-12 in long connecting the Stomach to the Jejunum It is divided in two parts:
- the pyloric antrum, which connects to the body of the stomach. Pyloric antrum ( antrum, lesser cul-de-sac) is the initial portion of the pyloric part of the Stomach.
- the pyloric canal, which connects to the duodenum. The pyloric canal, also known as the canalis pyloricus, is the opening between the Stomach and the Small intestine See also
The pyloric sphincter, or valve, is a strong ring of smooth muscle at the end of the pyloric canal and lets food pass from the stomach to the duodenum. A sphincter is a structure usually a circular Muscle, that normally maintains constriction of a natural body passage or orifice and which relaxes as required by normal physiological For other uses see Valve (disambiguation. For the electronic component see Thermionic valve. It receives sympathetic innervation from celiac ganglion. The celiac ganglia are two large irregularly shaped masses of Nerve tissue in the upper Abdomen.
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Medical significance
One medical condition associated with the pylorus is pyloric stenosis. Pyloric stenosis (or infantile hypertrophic pyloric stenosis) is a condition that causes severe vomiting in the first few months of life In such conditions as stomach cancer, when tumours may partly block the pyloric canal, a special tube can be implanted surgically to connect the stomach to the duodenum to assist food to pass from one to the other. Stomach or gastric cancer can develop in any part of the Stomach and may spread throughout the stomach and to other organs particularly the Esophagus and This tube is called a pyloric stent.
In popular culture
In John Kennedy Toole's A Confederacy of Dunces, the protagonist complains frequently about his "valve", which opens or shuts according to stress levels. John Kennedy Toole ( December 17, 1937 &ndash March 26, 1969) was an American Novelist from New Orleans Louisiana A Confederacy of Dunces is a Novel written by John Kennedy Toole, published in 1980, 11 years after the author's Suicide.
Additional images
 The longitudinal and circular muscular fibers of the stomach, viewed from above and in front. |
 The oblique muscular fibers of the stomach, viewed from above and in front. |
References
External links
- SUNY Labs 37:06-0105 - "Abdominal Cavity: The Stomach"
- SUNY Labs 38:07-0102 - "Stomach, Spleen and Liver: The Pylorus"
- SUNY Anatomy Image 8150
Dictionary
pylorus
-noun
- (anatomy) The opening in a vertebrate, including humans, at the lower end of the stomach that opens into the duodenum.
- A muscular or myovascular structure that controls the opening of an orifice or lumen of an organ.
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