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Pyloric antrum
From Wikipedia, the free encyclopedia
| Pyloric antrum | |
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| Outline of stomach, showing its anatomical landmarks. (Pyloric antrum visible at left.) | |
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| Interior of the stomach. (Pyloric antrum visible at left.) | |
| Latin | antrum pyloricum |
| Gray's | subject #247 1162 |
| MeSH | Pyloric+Antrum |
| Dorlands/Elsevier | a_50/14179413 |
Pyloric antrum (antrum, lesser cul-de-sac) is initial portion of the pyloric part of the stomach. It is near the bottom of the stomach on the lateral side of the pyloric sphincter, which separates the stomach and the duodenum.
It may temporarily become partially or completely shut off from the remainder of the stomach during digestion by peristaltic contraction of the prepyloric sphincter; it is demarcated, sometimes, from the second part of the pyloric part of the stomach (pyloric canal) by a slight groove.
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The pyloric antrum is the location of several important endocrine cells including Gastrin-producing G Cells (stimulate acid production) and the luminal-pH-sensitive population of somatostatin producing of D cells (responsible for shutting off acid secretion. There is a second hormone-sensitive population near the fundus.)
Pylorus - lesser,
atrum - cave; cavern; hollow place with overarching foliage; cavity, hollow; tomb
 Stomach |
 Stomach |
- William F Ganong. "Review of Medical Physiology, 22nd Edition."
- Physiology Lecture Notes.
- Controversty over definition at plig.org
- SUNY Labs 37:06-0104 - "Abdominal Cavity: The stomach"
- SUNY Anatomy Image 7765
- {{eMedicineDictionary|Pyloric+antrum}]
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This digestive system article is a stub. You can help Wikipedia by expanding it. |
| Anatomy of torso, digestive system: Gastrointestinal tract |
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| Upper gastrointestinal tract Mouth • Pharynx (nasopharynx, oropharynx, hypopharynx) • Esophagus • Crop • Stomach (rugae, gastric pits, cardia/gland, fundus/gland, pylorus/gland, pyloric antrum) Lower gastrointestinal tract Large intestine: Cecum • Colon (ascending colon, transverse colon, descending colon, sigmoid colon) • Rectum (Houston valve, rectal ampulla, pectinate line) • Anal canal (anal valves, anal sinuses, anal columns) Anus: Sphincter ani internus muscle • Sphincter ani externus muscle GALT: Peyer's patches • M cells intestinal villus • crypts of Lieberkühn • circular folds • taenia coli • haustra • epiploic appendix |