| ductus dorsopancreaticus | The excretory duct of the head of the pancreas, one branch of which joins the pancreatic duct, the other opening independently into the duodenum at the lesser duodenal papilla. Synonym: ductus pancreaticus accessorius, Bernard's canal, Bernard's duct, ductus dorsopancreaticus, Santorini's canal, Santorini's duct. (05 Mar 2000) |
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| ductus ejaculatorius | The duct formed by the union of the deferent duct and the excretory duct of the seminal vesicle, which opens into the prostatic urethra. Synonym: ductus ejaculatorius, spermiduct. (05 Mar 2000) |
| ductus endolymphaticus | Duct connecting the endolymphatic sac with the membranous labyrinth. (12 Dec 1998) |
| ductus epididymidis | A convoluted tube into which the efferent ductules open and which itself terminates in the ductus deferens. Synonym: ductus epididymidis. (05 Mar 2000) |
| ductus epoophori longitudinalis | A rudimentary vestige of the mesonephric duct in the female into which the tubules of the epoophoron open; it is located in the broad ligament of the uterus, parallel with the lateral part of the uterine tube, and in the lateral walls of the cervix and vagina. Synonym: ductus epoophori longitudinalis, ductus deferens vestigialis, Gartner's canal, Gartner's duct. (05 Mar 2000) |
| ductus excretorius | A duct carrying the secretion from a gland or a fluid from any reservoir. Synonym: ductus excretorius. (05 Mar 2000) |
| ductus excretorius vesiculae seminalis | The passage leading from a seminal vesicle to the ejaculatory duct. Synonym: ductus excretorius vesiculae seminalis. (05 Mar 2000) |
| ductus glandulae bulbourethralis | The long slender duct on each side passing down through the inferior fascia of the urogenital diaphragm to enter the bulb of the penis and course forward 2 or 3 cm before terminating in the urethra. Synonym: ductus glandulae bulbourethralis. (05 Mar 2000) |
| ductus hemithoracicus | An accessory thoracic duct, usually emptying into the thoracic duct but sometimes discharging independently into the right subclavian vein. Synonym: ductus hemithoracicus. (05 Mar 2000) |
| ductus incisivus | A rudimentary duct, or protrusion of the mucous membrane into the incisive canal, on either side of the anterior extremity of the nasal crest. Synonym: ductus incisivus. (05 Mar 2000) |
| ductus lactiferi | The ducts, numbering 15 or 20, which drain the lobes of the mammary gland; they open at the nipple. Synonym: ductus lactiferi, canalicular ducts, galactophore, galactophorous canals, galactophorous ducts, mamillary ducts, mammary ducts, milk ducts, tubuli galactophori, tubuli lactiferi. (05 Mar 2000) |
| ductus lingualis | A pit on the upper surface of the tongue at the apex of the sulcus terminalis; it marks the point of origin of the ductus thyroglossus of the embryo; known more commonly as the foramen caecum. (05 Mar 2000) |
| ductus lobi caudati sinister | A tributary to the left hepatic duct draining bile from the left half of the caudate lobe. Synonym: ductus lobi caudati sinister. (05 Mar 2000) |
| ductus mesonephricus | A duct in the embryo draining the mesonephric tubules; in the male it becomes the ductus deferens; in the female it becomes vestigial. See: longitudinal duct of epoophoron. Synonym: ductus mesonephricus, wolffian duct. (05 Mar 2000) |
| ductus nasolacrimalis | The passage leading downward from the lacrimal sac on each side to the anterior portion of the inferior meatus of the nose, through which tears are conducted into the nasal cavity. Synonym: ductus nasolacrimalis, nasal duct. (05 Mar 2000) |