| superior flexure of duodenum | The flexure at the junction of the superior and descending parts of the duodenum. Synonym: flexura duodeni superior. (05 Mar 2000) |
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| inferior flexure of duodenum | The bend at the junction of the descending and horizontal parts of the duodenum. Occasionally a bend, the left inferior duodenal flexure, occurs at the junction of the horizontal and ascending parts. Synonym: flexura duodeni inferior. (05 Mar 2000) |
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| superior part of duodenum | superior part of duodenum |
| ascending part of duodenum | The terminal or fourth part of the duodenum, ascending from the horizontal part to the jejunum. Synonym: pars ascendens duodeni. (05 Mar 2000) |
| horizontal part of duodenum | pars horizontalis duodeni, inferior part of duodenum, pars inferior duodeni |
| sphincter of third portion of duodenum | A physiological sphincter supposedly located at the horizontal (inferior) portion of the duodenum. (05 Mar 2000) |
| superficial part of duodenum | See: duodenum. (05 Mar 2000) |
| suspensory muscle of duodenum | A broad flat band of smooth muscle and fibrous tissue attached to the right crus of the diaphragm and to the duodenum at its junction with the jejunum. Synonym: musculus suspensorius duodeni, Treitz's ligament, Treitz's muscle. (05 Mar 2000) |
| descending part of duodenum | descending part of duodenum |
| duodenum | <anatomy> The first or proximal portion of the small intestine, extending from the pylorus to the jejunum, so called because it is about 12 fingerbreadths in length. Origin: L. Duodeni = twelve at a time (18 Nov 1997) |
| inferior part of duodenum | pars horizontalis duodeni, inferior part of duodenum, pars inferior duodeni |
| longitudinal fold of duodenum | A fold of mucosa on the medial wall of the descending part of the duodenum above the major duodenal papilla, probably caused by the relation to the common bile duct. Synonym: plica longitudinalis duodeni. (05 Mar 2000) |
| anorectal flexure | The anteroposterior curve with convexity anteriorward of the last portion of the rectum. Synonym: flexura perinealis recti, anorectal angle, anorectal flexure. (05 Mar 2000) |
| basicranial flexure | The dorsally concave curvature of the rhombencephalon in the embryo; appearance indicates division of rhombencephalon into myelencephalon and metencephalon. Synonym: basicranial flexure, transverse rhombencephalic flexure. (05 Mar 2000) |
| caudal flexure | The bend in the lumbosacral region of the embryo. Synonym: sacral flexure. (05 Mar 2000) |
| cephalic flexure | The sharp, ventrally concave bend in the developing midbrain of the embryo. Synonym: cerebral flexure, cranial flexure, mesencephalic flexure. (05 Mar 2000) |