pylorus

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Related to Pyloric stomach: pyloric antrum

pylorus

 [pi-lor´us]
the distal aperture of the stomach, opening into the duodenum. The term has also been 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. The pylorus contains many glands that help produce hydrochloric acid. Occasionally, in infants, the pyloric muscle is greatly enlarged and thickened, so that emptying of the stomach is prevented. This condition, hypertrophic pyloric obstruction or pyloric stenosis, can be corrected by surgery.

py·lo·rus

, pl.

py·lor·i

(pi-lōr'ŭs, pī-lōr'ī), [TA]
1. The muscular tissue surrounding and controlling the aboral outlet of the stomach.
2. A muscular or myovascular device to open (musculus dilator) and to close (musculus sphincter) an orifice or the lumen of an organ.
[L. fr. G. pylōros, a gatekeeper, the pylorus, fr. pylē, gate, + ouros, a warder]

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

pylorus

(pī-lôr′əs, pĭ-)
n. pl. py·lori (-lôr′ī′)
The passage at the lower end of the stomach that opens into the duodenum.

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.

py·lo·rus

, pl. pylori (pī-lōr'ŭs, -ī) [TA]
1. A muscular or myovascular device to open (musculus dilatator) and to close (musculus sphincter) an orifice or the lumen of an organ.
2. The muscular tissue surrounding and controlling the aboral outlet of the stomach.
[L. fr. G. pylōros, a gatekeeper, the pylorus, fr. pylē, gate, + ouros, a warder]

pylorus

The narrowed outlet of the stomach where it opens into the DUODENUM. At the pylorus, the muscular coats of the stomach wall are thickened to form a strong muscle ring (a SPHINCTER) capable of closing and opening to control the movement of food.

Pylorus

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

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.