Pylorus
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It has been suggested that Pyloric antrum be merged into this article or section. (Discuss) |
| 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. It is divided in two parts:
- the pyloric antrum, which connects to the body of the stomach.
- the pyloric canal, which connects to the duodenum.
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. It receives sympathetic innervation from celiac ganglion.
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[edit] Medical significance
One medical condition associated with the pylorus is pyloric stenosis. 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. This tube is called a pyloric stent.
[edit] 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.
[edit] 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. |
[edit] References
[edit] 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
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