Intestine, small

The tubelike organ that receives the products of digestion from the stomach. It has three parts, the duodenum, the jejunum, and the ileum. The duodenum is rich in glands that produce digestive enzymes, and also receives bile from the liver. Digested material moves from the duodenum to the ileum through the jejunum. The ileum ends with the ileocecal valve, which prevents food passed into the large intestine from traveling back into the small intestine. The walls of the small intestine are muscular, and contract to move digested food along its length. The intestinal tube is lined with a mucus-like tissue that sends forth tiny, finger-like projections called villi. The villi increase the surface available for absorbing nutrients from digested food. See also intestine, large.

Medical dictionary. 2011.

Look at other dictionaries:

  • intestine — The digestive tube passing from the stomach to the anus. It is divided primarily into the intestinum tenue (small i.) and the intestinum crassum (large i.). SYN: bowel, gut (1), intestinum (1). [L. intestinum] large i. [TA] the portion of the… …   Medical dictionary

  • Small intestine — The part of the digestive tract that extends from the stomach to the large intestine. * * * small intestine n the part of the intestine that lies between the stomach and colon, consists of duodenum, jejunum, and ileum, secretes digestive enzymes …   Medical dictionary

  • small — adj., n., & adv. adj. 1 not large or big. 2 slender; thin. 3 not great in importance, amount, number, strength, or power. 4 not much; trifling (a small token; paid small attention). 5 insignificant; unimportant (a small matter; from small… …   Useful english dictionary

  • Intestine, large — The tubelike organ that completes the process of digestion, receiving material from the small intestine. It has four parts: the cecum (caecum), the appendix (vermiform appendix), the colon, and the rectum. Once the products of digestion enter the …   Medical dictionary

  • intestine — in|tes|tine [ınˈtestın] n ↑artery, ↑brain, ↑fatty, ↑tissue, ↑heart, ↑kidney, ↑intestine, ↑intestine2, ↑small, ↑large, ↑liver, ↑lung, ↑muscles, ↑stomach, ↑ …   Dictionary of contemporary English

  • intestine — I. adjective Etymology: Middle English, from Middle French or Latin; Middle French intestin, from Latin intestinus, from intus within more at ent Date: 15th century internal; specifically of or relating to the internal affairs of a state or… …   New Collegiate Dictionary

  • intestine — I (New American Roget s College Thesaurus) n. bowel, alimentary canal, guts (inf.). See body. II (Roget s IV) n. Syn. alimentary canal, large intestine, small intestine, bowels, food passage, gut*, pipe*, spaghetti*; see also intestines , organ 2 …   English dictionary for students

  • intestine — noun (C) the long tube that takes food from your stomach out of your body intestinal adjective: intestinal bacteria see also: large intestine, small intestine …   Longman dictionary of contemporary English

  • Small intestine cancer — Classification and external resources ICD 10 C17 ICD 9 152 …   Wikipedia

  • Small intestinal submucosa — (SIS)= Small intestinal submucosa (SIS) is a common, non immunogenic material used in several clinical applications. Some uses under investigation include a scaffold for intervertebral disc regeneration. Unlike other scaffold materials, the… …   Wikipedia

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