pylorus

pylorus /py·lo·rus/ (pi-lor´us) the distal aperture of the stomach, opening into the duodenum; variously used to mean pyloric part of the stomach, and pyloric antrum, canal, opening, or sphincter.pylor´ic

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py·lo·rus (p-lôrs)

n. pl. py·lo·ri (-lôr)

1. The passage at the lower end of the stomach that opens into the duodenum.

2. A muscular or myovascular structure that opens or closes an orifice or lumen of an organ.

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Pylorus

The ring of muscle that controls the passage of material from the stomach into the small intestine.

Mentioned in: Nasogastric Suction, Pyloroplasty, Ulcer Surgery

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pylorus

[pīlôr′əs] pl. pylori, pyloruses

Etymology: Gk, pyle, gate, ouros, guard

a narrow, nearly tubular part of the stomach that angles to the right from the body of the stomach toward the duodenum. The most common position of the pylorus is about 3 cm to the right of the sagittal axis. It is distinctively marked by the thickening of the pyloric sphincter, and its lining is composed of an intestinal kind of epithelium rather than the gastric kind common to the body of the stomach. pyloric, adj.

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pylorus

the distal aperture of the stomach or abomasum, opening into the duodenum. The term pylorus is variously used to mean the pyloric part of the stomach, and the pyloric antrum, canal, opening or sphincter. A ring of muscles, the pyloric sphincter, serves as a 'gate', closing the opening from the stomach to the intestine. It opens periodically, allowing the contents of the stomach to move into the duodenum. See also pyloric.