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

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

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.
References in periodicals archive ?
The cardiac segment of the stomach showed significantly thicker lamina propria than the pyloric stomach. Similarly, tunica muscularis of the stomach was composed of two layers: the inner circular muscle layer and the outer longitudinal muscle bundles (Figure 2(c)).
The stratified columnar epithelium of the pyloric stomach abruptly changes to the pseudostratified epithelium of the principal tubule of the hepatopancreas (Fig.