| 释义 |
‖ urachus Anat.|ˈjʊərəkəs|
[mod.L., ad. Gr. οὐραχός urinary canal of a fœtus.]
A fibrous cord binding the apex of the bladder to the anterior abdominal wall and the peritoneal folds.
[1578Banister Hist. Man v. 83 b, Out of the higher part and middest of the bottome of the bleddar a way springeth..called Vrachos.] 1615Crooke Body of Man (1631) 213 The ligament of the bladder cald Vrachus. 1646[see allantois]. 1661Lovell Hist. Anim. & Min. Introd. b 5 b, To the urachus the umbilicall arteries are joyned. 1728Chambers Cycl. s.v. Umbilical, The Urachus is only plainly found in Brutes. 1788Encycl. Brit. (ed. 3) I. 742 These fibres have been considered as the urachus, though without having been ever found pervious. 1804Med. Jrnl. XII. 14 From their uniting part arose the umbilical vessels, meeting as usual the urachus. 1890Retrospect Med. CII. 336 An enormously dilated urachus. |