[TA] the dilated portion of the superior part of the duodenum. See also: duodenal cap. Synonym(s): ampulla duodeni [TA], bulbus duodeni ☆ , duodenal ampulla (1)
du·o·de·nal am·pul·la
(dū'ō-dē'năl am-pul'lă) The dilated portion of the superior part of the duodenum; See also: duodenal cap