| UA | absorption unsharpness; ultra-audible; ultrasonic arteriography; umbilical artery; unauthorized abse... |
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| UAC | umbilical artery catheter |
| UC | ulcerative colitis; ultracentrifugal; umbilical cord; unchanged; unclassifiable; unconscious; undiff... |
| UCBC | umbilical cord blood culture |
| UH | umbilical hernia; uncontrolled hemorrhage; unfavorable histology; upper half |
| umbilical prevesical fascia | The thin fascial layer interposed between the transversalis fascia and the umbilicovesical fascia It extends between the medial umbilical ligaments from the umbilicus downward in front of the bladder, forming the posterior boundary of the retropubic space. (05 Mar 2000) |
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| umbilical region | The central region of the abdomen about the umbilicus. Synonym: regio umbilicalis. (05 Mar 2000) |
| umbilical ring | An opening in the linea alba through which pass the umbilical vessels in the foetus; in young embryos it is relatively nearer to the pubis, but gradually ascends to the centre of the abdomen; it is closed in the adult, its site being indicated by the umbilicus or navel. Synonym: annulus umbilicalis, canalis umbilicalis. (05 Mar 2000) |
| umbilical souffle | <obstetrics, paediatrics> A blowing murmur, synchronous with the foetal heart beat, sometimes only systolic and sometimes continuous, heard on auscultation over the pregnant uterus. Synonym: funic souffle, funicular souffle, umbilical souffle. (05 Mar 2000) |
| umbilical vein | See: left umbilical vein. (05 Mar 2000) |
| umbilical veins | Veins which carry oxygenated, nutrient-rich blood from the placenta and which are obliterated in the first few days after birth. (12 Dec 1998) |
| umbilical vesicle | <embryology, ornithology> One of the set of extra embryonic membranes, growing out from the gut over the yolk surface, in birds formed from the splanchnopleure, an outer layer of splanchnic mesoderm and an inner layer of endoderm. (18 Nov 1997) |
| ureteric branches of the patent part of umbilical artery | <anatomy, artery> Supplies pelvic portion of ureter. Synonym: rami ureterici partis patentis arteriae umbilicale. (05 Mar 2000) |
| lateral umbilical fold | The ridge on the peritoneal surface of the anterior abdominal wall formed by the inferior epigastric vessels. Synonym: plica umbilicalis lateralis, epigastric fold, plica epigastrica. (05 Mar 2000) |
| lateral umbilical ligament | An old name for ligamentum umbilicale mediale. Synonym: lateral umbilical ligament. (05 Mar 2000) |
| left umbilical vein | <anatomy, vein> The vein that returns the blood from the placenta to the foetus; traversing the umbilical cord, it enters the foetal body at the umbilicus and passes thence into the liver, where it is joined by the portal vein; its blood then flows by way of the ductus venosus and the inferior vena cava to the right atrium. Synonym: vena umbilicalis sinistra. (05 Mar 2000) |