Infobox Anatomy
Latin = valvula pylori
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Caption = Outline of stomach, showing its anatomical landmarks.

Caption2 = Interior of the stomach. (Pylorus labeled at center left.)
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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.

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.

In popular culture

In John Kennedy Toole's "A Confederacy of Dunces", the protagonist complains frequently about his pyloric valve, which, he claims, opens or shuts according to stress levels.

In Umberto Eco's "The Mysterious Flame of Queen Loana", translated from the Italian by Geoffrey Brock, the protagonist, Giambattista Bodoni, alternately describes a tickling or a knot in his pylorus that feels like "a mysterious flame".




External links

* - "Abdominal Cavity: The Stomach"
* - "Stomach, Spleen and Liver: The Pylorus"

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Look at other dictionaries:

  • Pylorus — Py*lo rus, n.; pl. {Pylori}. [L., fr. Gr. ? pylorus, gate keeper; ? a gate + ? watcher, guardian.] (Anat.) (a) The opening from the stomach into the intestine. (b) A posterior division of the stomach in some invertebrates. [1913 Webster] …   The Collaborative International Dictionary of English

  • Pylōrus — (gr.), 1) Thürhüter; 2) (Anat.), der Pförtner der untern Magenöffnung. Daher Pylorĭcae arterĭae, P. venae, Arterien u. Venen des Pylorus, s. u. Bauch 2) C) a) bb) …   Pierer's Universal-Lexikon

  • pylorus — 1610s, from L.L. pylorus “the lower orifice of the stomach,” from Gk. pyloros “gatekeeper, porter,” from pyle “gate” (see PYLON (Cf. pylon)) + ouros “watcher, guardian” (see WARRANT (Cf. warrant)) …   Etymology dictionary

  • Pylŏrus — (griech.), Pförtner, s. Magen …   Meyers Großes Konversations-Lexikon

  • Pylorus — Pylōrus (grch.), Pförtner (s. Magen); Pylorusstenōse, Verengerung des Magenpförtners; Pylorusresektion, operative Entfernung des Pförtners, bes. bei Magenkrebs …   Kleines Konversations-Lexikon

  • Pylorus — Pylorus, s. Magen …   Herders Conversations-Lexikon

  • Pylorus — Pylorus, Magenpförtner ⇒ Magen …   Deutsch wörterbuch der biologie

  • pylorus — [pī lôr′əs] n. pl. pylori [pī lôr′ī, pə lôr′ī] [LL < Gr pylōros, gatekeeper < pylē, gate + ouros, watchman] the opening, surrounded by muscular tissue, from the stomach into the duodenum, the first part of the small intestine pyloric… …   English World dictionary

  • Pylorus — Der Pylorus (gr. πυλωρός [pylōrós], „Pförtner“[1]) ist die ringförmig angeordnete glatte Muskulatur, die sich zwischen dem Antrum des Magens (Antrum pyloricum) und dem Zwölffingerdarm (Duodenum) befindet. Der Pylorus ist in Ruhe geschlossen. Er… …   Deutsch Wikipedia

  • pylorus — pyloric /puy lawr ik, lor , pi /, adj. /puy lawr euhs, lohr , pi /, n., pl. pylori / lawr uy, lohr uy/. Anat. the opening between the stomach and the duodenum. See diag. under intestine. [1605 15; < LL < Gk pylorós lit., gatekeeper] * * * ▪… …   Universalium

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