duodenum

duodenum /du·o·de·num/ (doo″o-de´num) the first or proximal portion of the small intestine, extending from the pylorus to the jejunum.duode´nal

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du·o·de·num (d-dnm, d-dn-m)

n. pl. du·o·de·nums or du·o·de·na (d-dn, d-dn-)

The beginning portion of the small intestine, starting at the lower end of the stomach and extending to the jejunum.

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duo·denal (d-dnl, d-dn-l) adj.

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Duodenum

The first of the three segments of the small intestine. The duodenum connects the stomach and the jejunum. Most peptic ulcers are in the duodenum.

Mentioned in: Biliary Atresia, Cutis Laxa, Enterostomy, Enzyme Therapy, Pancreas Transplantation, Pancreatitis, Tube Feedings, Ulcers (Digestive), Vagotomy

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duodenum

[do̅o̅′ədē′nəm, do̅o̅·od′inəm] pl. duodena, duodenums

Etymology: L, duodeni, 12 fingers

the shortest, widest, and most fixed portion of the small intestine, taking an almost circular course from the pyloric valve of the stomach so that its termination is close to its starting point. It is about 25 cm long and is divided into superior, descending, horizontal, and ascending portions. The superior portion extends from the pylorus to the neck of the gallbladder. The descending portion extends from the neck of the gallbladder at the level of the first lumbar vertebra to the cranial border of the fourth lumbar vertebra. The horizontal portion passes from right to left, from the level of the fourth lumbar vertebra to the diaphragm. The ascending portion rises on the left side of the aorta to the level of the second lumbar vertebra, turning ventrally to become the jejunum at the duodenojejunal flexure. Compare jejunum, ileum.

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duodenum [doo″o-de´num]

the first or proximal portion of the small intestine, about 25 cm (10 inches) long, extending from the pylorus to the jejunum. It plays an important role in digestion of food because both the common bile duct and the pancreatic duct empty into it. It is subject to various disorders, the most common of which are peptic ulcers and obstruction due to dilatation of the intestine and stasis of the duodenal contents. The duodenum also may be the site of diverticula, fistulas, and occasionally tumors. See also digestive system.

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duodenum

(doo´dē´nm),
n the first, shortest, and most fixed portion of the small intestine. The duodenum courses from the pyloric valve of the stomach and terminates in a junction with the jejunum at the duodenojejunal flexure.

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duodenum

the first or proximal portion of the small intestine, extending from the pylorus to the jejunum. It plays an important role in digestion of food because the bile and pancreatic ducts empty into it. See also digestive system.

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Patient discussion about duodenum.

Q. What is the difference between duodenal ulcer and stomach ulcer? I was diagnosed recently with duodenal ulcer. I heard the term stomach ulcer but not duodenal. What causes duodenal and what cause stomach ulcer? And how do they treat duodenal ulcer?

A. The location. Stomach ulcers are located in the stomach. Duodenal ulcers are located in the duodenum, which is the first part of the intestine (that have 3 parts) right after the stomach. The cause is ususal the same and so is the treatment- antibiotics. I got both. First time it was stomach ulcer and then duodenal. So I can tell you they are both very painful …:)