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jejunum

jejunum The part of the small intestine next beyond the duodenum, and leading to the ileum. Its lining has an enormous surface area, by virtue of folds, projections (villi), and microvilli on the villi. Enzyme secretion and digestion, started in the stomach, continue here, and absorption of the products begins — of glucose and amino acids into blood capillaries and of fats into lymph capillaries (lacteals).

Stuart Judge


See alimentary system.

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"jejunum." The Oxford Companion to the Body. . Encyclopedia.com. 20 Aug. 2017 <http://www.encyclopedia.com>.

"jejunum." The Oxford Companion to the Body. . Encyclopedia.com. (August 20, 2017). http://www.encyclopedia.com/medicine/encyclopedias-almanacs-transcripts-and-maps/jejunum

"jejunum." The Oxford Companion to the Body. . Retrieved August 20, 2017 from Encyclopedia.com: http://www.encyclopedia.com/medicine/encyclopedias-almanacs-transcripts-and-maps/jejunum

jejunum

jejunum The portion of the mammalian small intestine that follows the duodenum and precedes the ileum. The surface area of the lining of the jejunum is greatly increased by numerous small outgrowths (see villus). This facilitates the absorption of digested material, which is the prime function of the jejunum.

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"jejunum." A Dictionary of Biology. . Encyclopedia.com. 20 Aug. 2017 <http://www.encyclopedia.com>.

"jejunum." A Dictionary of Biology. . Encyclopedia.com. (August 20, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/jejunum

"jejunum." A Dictionary of Biology. . Retrieved August 20, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/jejunum

jejunum

je·ju·num / jiˈjoōnəm/ • n. [in sing.] Anat. the part of the small intestine between the duodenum and ileum. DERIVATIVES: je·ju·nal / ˈjoōnl/ adj.

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"jejunum." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. 20 Aug. 2017 <http://www.encyclopedia.com>.

"jejunum." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. (August 20, 2017). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/jejunum

"jejunum." The Oxford Pocket Dictionary of Current English. . Retrieved August 20, 2017 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/jejunum

jejunum

jejunum (ji-joo-nŭm) 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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"jejunum." A Dictionary of Nursing. . Encyclopedia.com. 20 Aug. 2017 <http://www.encyclopedia.com>.

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"jejunum." A Dictionary of Nursing. . Retrieved August 20, 2017 from Encyclopedia.com: http://www.encyclopedia.com/caregiving/dictionaries-thesauruses-pictures-and-press-releases/jejunum

jejunum

jejunum Part of the small intestine, between the duodenum and the ileum; see gastro‐intestinal tract.

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"jejunum." A Dictionary of Food and Nutrition. . Encyclopedia.com. 20 Aug. 2017 <http://www.encyclopedia.com>.

"jejunum." A Dictionary of Food and Nutrition. . Encyclopedia.com. (August 20, 2017). http://www.encyclopedia.com/education/dictionaries-thesauruses-pictures-and-press-releases/jejunum

"jejunum." A Dictionary of Food and Nutrition. . Retrieved August 20, 2017 from Encyclopedia.com: http://www.encyclopedia.com/education/dictionaries-thesauruses-pictures-and-press-releases/jejunum

jejunum

jejunum: see intestine.

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"jejunum." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. 20 Aug. 2017 <http://www.encyclopedia.com>.

"jejunum." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. (August 20, 2017). http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/jejunum

"jejunum." The Columbia Encyclopedia, 6th ed.. . Retrieved August 20, 2017 from Encyclopedia.com: http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/jejunum