DUCT

n. Du3kt. Lat., duct us (from ducere, to lead, conduct). Fr., conduit, canal. Ger., Gang. It., condotto. Sp., cpnducto. A canal for conducting the secretion of a gland. In some instances the term is applied to canals that conduct material other than the secretion of a gland. Any tube for the conveyance of an animal or vegetable product. In botany, a tube formed by the confluence of 2 or more cells; a ve el. In the pi., vascular ti ue. [B, 291 (o, 24); L, 343.] Cf. CANAL. Aberrant bile-d's. Biliary d's not surrounded by lobules, occasionally found in the left lateral ligament of the liver and in the fibrous bands which bridge over the fo a of the vena cava and the umbilical fi ure. They anastomose into a network, are accompanied by branches of the portal and hepatic veins and of the hepatic artery, and are the remains of hepatic substance present at an early stage in development. [L, 31, 142.] Acce ory pancreatic d. Lat., duct us pancreatic us acce orius (seu azygos, seu minor, seu recurrens, seu secundarius, seu superior). Fr., conduit pancreatique acce oire (ou supplement a ire). Ger., accesKorische Bauchspeichelgang. The excretory d. of the le er pancreas, opening into the pancreatic d. or into the duodenum close to the orifice of the common bile-d. [L, 31, 142.] Adipose d's. Lat., duct us adiposi. The sacs inclosing the fat. [A, 343.] Alr-d. In botany, one of the intercellular spaces filled with air in aquatic plants; also the vascular ti ue generally. [B, 291 (a, 24).] Alimentary d. See Thoracic d. Alveolar d's. The infuudibula of the bronchioles. [L, 351.] Annular d's. In botany, ring shaped thickenings of the cells of vascular ti ue. [B, 291 (a, 24).] Arch i nephric d. See Mesonephric d. Bartholin's d. See D. of Bartholin.'Bellini's d's. See TUBES of Bellini. Bile-d's, Biliary d's. Lat., duct us biliarii (seu biliferi). Fr., canalicules biliaires. Ger., Gallengange. It, condotti coledochi. See Interlobular bile-d's and Intra lobular biliary CANALS. Canalicular d's of the breast. The smaller galactophorous d's. Cement d's. Of C. Darwin, channels which pa through the antennae of the Cirriped i a from glands secreting an adhesive, cement like substance. [L, 147.] Cochlear d. See Cochlear CANAL. Common bile-d. Lat., duct us communis choledochus. Fr., canal choledoque commun. Ger., gemeinschaftlicher Gallengang. A d. about 3 inches long which carries the bile to the intestines. It is U2, blue; U3, lull; U4, full; U8, urn; U, like u (German). [s. 623]