Jejunum


Jejunum
Part of the small intestine. It is half-way down the small intestine between its duodenum and ileum sections. The term "jejunum" derives from the Latin "jejunus," which means "empty of food," "meager," or "hungry." The ancient Greeks noticed at death that this part of the intestine was always empty of food. Hence, the name the jejunum. The Latin "jejunus" also gave rise to "jejune" means lacking in nutritive value and devoid of substance, significance or interest, that is dull. A jejune argument is one that is empty (like the jejunum) and totally devoid of interest.
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The portion of small intestine, about 8 feet in length, between the duodenum and the ileum. The j. is distinct from the ileum in being more proximal, of larger diameter with a thicker wall, having larger, more highly developed plicae circulares, being more vascular (redder in appearance), with the jejunal arteries forming fewer tiers of arterial arcades and longer vasa recta. [L. jejunus, empty]

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je·ju·num ji-'jü-nəm n, pl je·ju·na -nə the section of the small intestine that comprises the first two fifths beyond the duodenum and that is larger, thicker-walled, and more vascular and has more circular folds and fewer Peyer's patches than the ileum

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n.
part of the small intestine. It comprises about two-fifths of the whole small intestine and connects the duodenum to the ileum.
jejunal adj.

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je·ju·num (jə-jooґnəm) [L. “empty”] [TA] the second section of the small intestine, extending from the duodenum to the ileum. jejunal adj

Medical dictionary. 2011.

Look at other dictionaries:

  • jéjunum — [ ʒeʒynɔm ] n. m. • v. 1370; lat. méd. jejunum intestinum « intestin à jeun », à cause du peu de matières qu il contient ♦ Anat. Premier segment du jéjuno iléon, faisant suite au duodénum. Adj. JÉJUNAL, ALE, AUX . ● jéjunum nom masculin (bas… …   Encyclopédie Universelle

  • Jejunum — Jéjunum Intestin grêle En anatomie du système digestif, le jéjunum (de l adjectif latin jejune, qui signifie jeûne ou affamé ) est la partie centrale des trois divisions de l intestin grêle, en aval du duodénum et en amont de l iléon. Chez l …   Wikipédia en Français

  • Jejunum — Je*ju num, n. [NL., fr. L. jejunus empty, dry.] (Anat.) The middle division of the small intestine, between the duodenum and ileum; so called because usually found empty after death. [1913 Webster] …   The Collaborative International Dictionary of English

  • Jejūnum — (lat.), Leerdarm, s. Darm, S. 520 …   Meyers Großes Konversations-Lexikon

  • jejunum — late 14c., from L. ieiunum, neut. of ieiunus (see JEJUNE (Cf. jejune)). Translating Gk. nestis (Galen). So called because it typically is found empty during dissections, perhaps because it would tend to drain in a body laid on its back …   Etymology dictionary

  • jejunum — jejúnum m DEFINICIJA anat. dio tankog crijeva između dvanaesnika i ileuma ETIMOLOGIJA lat. ieiunum …   Hrvatski jezični portal

  • jejunum — [jē jo͞o′nəm, jəjo͞o′nəm] n. pl. jejuna [jē jo͞o′nə, jə jo͞o′nə] [ML < neut. of L jejunus, empty: it was formerly thought to be empty after death] the middle part of the small intestine, between the duodenum and the ileum: see INTESTINE… …   English World dictionary

  • Jejunum — Infobox Anatomy Name = PAGENAME Latin = GraySubject = 248 GrayPage = 1170 Caption = Small intestine Caption2 = Superior and inferior duodenal fossæ. Precursor = midgut System = Artery = jejunal arteries Vein = jejunal veins Nerve = celiac ganglia …   Wikipedia

  • Jejunum — Das Jejunum (zu deutsch „Leerdarm“) ist einer der drei Abschnitte des Dünndarms. Er schließt sich an das Duodenum („Zwölffingerdarm“) an und geht in das Ileum über. Er ist bei einem erwachsenen Menschen bis zu zwei Meter lang. Seinen deutschen… …   Deutsch Wikipedia

  • Jéjunum — Intestin grêle Le jéjunum (de l adjectif latin jejune, qui signifie « jeûne » ou « affamé ») est la partie centrale de l intestin grêle, en aval du duodénum et en amont de l iléon. Chez l Homme adulte, il mesure en général de… …   Wikipédia en Français


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