Duodenum
: The first part of the small intestine. The duodenum is a common site for peptic ulcer formation.
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The first division of the small intestine, about 25 cm or 12 fingerbreadths (hence the name) in length, extending from the pylorus to the junction with the jejunum at the level of the first or second lumbar vertebra on the left side. It is divided into the superior part, the first part of which is the duodenal cap, the descending part, into which the bile and pancreatic ducts open, the horizontal (inferior) part and the ascending part, terminating at the duodenojejunal junction. [Mediev. L. fr. L. duodeni, twelve]

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du·o·de·num .d(y)ü-ə-'dē-nəm, d(y)u̇-'äd-ən-əm n, pl -de·na -'dē-nə, -ən-ə or -de·nums the first, shortest, and widest part of the small intestine that in humans is about 10 inches (25 centimeters) long and that extends from the pylorus to the undersurface of the liver where it descends for a variable distance and receives the bile and pancreatic ducts and then bends to the left and finally upward to join the jejunum near the second lumbar vertebra
du·o·de·nal -'dēn-əl, -ən-əl adj

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n.
the first of the three parts of the small intestine. It extends from the pylorus of the stomach to the jejunum. The duodenum receives bile from the gall bladder (via the common bile duct) and pancreatic juice from the pancreas. Its wall contains various glands (including Brunner's glands) that secrete an alkaline juice, rich in mucus, that protects the duodenum from the effects of the acidic chyme passing from the stomach.
duodenal adj.

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du·o·de·num (doo″o-deґnəm) (doo-odґə-nəm) [L. duodeni twelve at a time] [TA] the first or proximal portion of the small intestine, much shorter than the following portions, extending from the pylorus to the jejunum; so called because its length is about 12 finger breadths. duodenal adj

Medical dictionary. 2011.

Look at other dictionaries:

  • duodénum — [ dɥɔdenɔm ] n. m. • 1478; lat. méd. duodenum, de duodenum digitorum « de douze doigts (de longueur) » ♦ Anat. Partie initiale de l intestin grêle accolée à la paroi abdominale postérieure, qui s étend du pylore à la première anse du jéjunum,… …   Encyclopédie Universelle

  • Duodenum — Duodénum Intestin grêle Le duodénum est le segment initial de l intestin grêle (duodénum + jéjunum + iléon). Il fait suite à l estomac par l intermédiaire du pylore. C est le seul segment fixe de cet intestin grêle, le reste étant mobile avec une …   Wikipédia en Français

  • Duodenum — Du o*de num, n. [NL., fr. duodeni twelve each: cf. F. duodenum. So called because its length is about twelve fingers breadth.] (Anat.) The part of the small intestines between the stomach and the jejunum. See Illust. of Digestive apparatus, under …   The Collaborative International Dictionary of English

  • duodenum — late 14c., from M.L. duodenum digitorium space of twelve digits, from L. duodeni twelve each. Coined by Gerard of Cremona (d.1187), who translated Canon Avicennae, a loan transl. of Gk. dodekadaktylon, lit. twelve fingers long, the intestine part …   Etymology dictionary

  • duodenum — duodènum m DEFINICIJA anat. početni dio tankoga crijeva koji se veže na želudac i u koji se izlijevaju sokovi iz gušterače i jetre; dodekadenum, dvanaesnik ETIMOLOGIJA lat. duodenum …   Hrvatski jezični portal

  • Duodēnum — (Anat.), der Zwölffingerdarm, s.u. Darm. A) a) …   Pierer's Universal-Lexikon

  • Duodēnum — (lat.), der Zwölffingerdarm, s. Darm …   Meyers Großes Konversations-Lexikon

  • Duodenum — Duodenum, lat., Zwölffingerdarm …   Herders Conversations-Lexikon

  • Duodenum — ⇒ Zwölffingerdarm …   Deutsch wörterbuch der biologie

  • duodènum — m anat. početni dio tankoga crijeva koji se veže na želudac i u koji se izlijevaju sokovi iz gušterače i jetre; dvanaesnik, dodekadenum ✧ {{001f}}lat …   Veliki rječnik hrvatskoga jezika

  • duodenum — DUODENUM. s. m. Terme d Anatomie emprunté du Latin. C est le nom donné à la première portion des intestins grêles, à cause de sa longueur qui est de douze travers de doigt …   Dictionnaire de l'Académie Française 1798

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