| 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 |
| umb | umbilicus, umbilical |
| 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 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) |
| anterior median fissure of medulla oblongata | The longitudinal groove in the midline of the anterior aspect of the medulla oblongata; it is the medullary equivalent of the anterior median fissure of the spinal cord and ends at the foramen caecum posterius; its caudal part is obliterated by the decussation of the pyramids. Synonym: fissura mediana anterior medullae oblongatae, anteromedian groove. (05 Mar 2000) |
| anterior median fissure of spinal cord | A deep median fissure on the anterior surface of the spinal cord. Synonym: fissura mediana anterior medullae spinalis, anteromedian groove, sulcus ventralis. (05 Mar 2000) |
| anterior median line | The line of intersection of the midsagittal plane with the anterior surface of the body. Synonym: linea mediana anterior. (05 Mar 2000) |
| palmar branch of median nerve | <anatomy, nerve> Branch of median nerve arising proximal to flexor retinaculum and running superficial to it to supply skin of proximal central palm and thenar eminence. Since it does not traverse carpal tunnel, it is not affected by carpal tunnel syndrome, even though it supplies skin distal to carpal tunnel. Synonym: ramus palmaris nervi mediani. (05 Mar 2000) |
| medial root of median nerve | <anatomy, nerve> The part of the median nerve coming from the medial cord of the brachial plexus. Synonym: radix medialis nervi mediani. (05 Mar 2000) |
| median | <statistics> Any value that divides the probability of a random variable in half, i.e. The probability of observing a value above the median and the probability of observing a value below the median are both less than or equal to one half. For a finite population or sample, the median is the middle value of an odd number of values (arranged in ascending order) or any value between the two middle values of an even number of values, in the latter case it is conventional to use the average of the two middle values. Origin: L. Medianus (18 Nov 1997) |
| median antebrachial vein | It begins at the base of the dorsum of the thumb, curves around the radial side, ascends the middle of the forearm, and just below the bend of the elbow divides into the intermediate basilic and intermediate cephalic veins; sometimes it divides lower down, one branch going to the basilic vein, the other to the intermediate vein of the elbow. Synonym: vena intermedia antebrachii, intermediate antebrachial vein, intermediate vein of forearm, median vein of forearm, vena mediana antebrachii. (05 Mar 2000) |
| median anterior maxillary cyst | A cyst in or near the incisive canal, arising from proliferation of epithelial remnants of the nasopalatine duct; the most common maxillary development cyst. Synonym: median anterior maxillary cyst, nasopalatine duct cyst. (05 Mar 2000) |
| median aperture of the fourth ventricle | The large midline opening in the posterior inferior part of the roof of the fourth ventricle, connecting the ventricle with the cerebellomedullary cistern. Synonym: apertura mediana ventriculi quarti, arachnoid foramen, Magendie's foramen, median aperture of the fourth ventricle. (05 Mar 2000) |
| median arcuate ligament | <anatomy> A tendinous connection between the crura of the diaphragm that arches over the aorta, forming the anterosuperior margin of the aortic hiatus. Synonym: ligamentum arcuatum medianum. (05 Mar 2000) |
| median artery | <anatomy, artery> Origin, anterior interosseous; distribution, accompanies median nerve to palm; anastomoses, branches of superficial palmar arch. Synonym: arteria comitans nervi mediani, arteria mediana. (05 Mar 2000) |