duodenalis

Duodenalis is a Latin adjective meaning "of the duodenum" and is used in anatomical nomenclature to indicate a relationship to the duodenum, the first section of the small intestine. The term appears in various compound names for structures associated with the duodenum, which spans from the pylorus to the jejunum.

In vascular anatomy, the arterial supply to the duodenum includes the superior and inferior pancreaticoduodenal arteries, commonly referred to in Latin as arteriae duodenales superiores and arteriae duodenales inferiores. These arteries form an anastomotic network between the celiac trunk (via the gastroduodenal artery) and the superior mesenteric artery, ensuring perfusion to the duodenal wall and adjacent pancreatic head.

In addition, the region is associated with the plexus duodenalis, a component of the autonomic nervous system that supplies the duodenum. This neural plexus is formed from fibers in the celiac and superior mesenteric plexuses and contributes to the innervation of the duodenal wall and mucosa.

Duodenalis is not a standalone anatomical entity or pathology; rather, it functions as a descriptor in compound terms to clarify relation to the duodenum. In English, the corresponding term is typically duodenal, as in duodenal arteries, duodenal nerves, or the duodenal plexus. The use of duodenalis reflects the Latin-based nomenclature common in human anatomy.