| 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) |
| umbilicated | Depressed in the middle, like a navel, as a flower, fruit, or leaf; navel-shaped; having an umbilicus; as, an umbilicated smallpox vesicle. <botany> Supported by a stalk at the central point. Origin: L. Umbilicatus. See Umbilic. Source: Websters Dictionary (01 Mar 1998) |
| umbilicated cataract | Congenital cataract in which a central white membrane replaces the nucleus. Synonym: disk-shaped cataract, life-belt cataract, umbilicated cataract. (05 Mar 2000) |
| umbilication | 1. A pit or navel-like depression. 2. Formation of a depression at the apex of a papule, vesicle, or pustule. (05 Mar 2000) |
| umbilicomammillary triangle | A triangle with its apex at the umbilicus and its base at the line joining the nipples. (05 Mar 2000) |
| umbilicovesical fascia | A thin fascial layer that extends between the medial umbilical ligaments and is continuous with fascia enclosing the bladder. (05 Mar 2000) |
| umbilicus | 1. <anatomy> The depression, or mark, in the median line of the abdomen, which indicates the point where the umbilical cord separated from the foetus; the navel. 2. An ornamented or painted ball or boss fastened at each end of the stick on which manuscripts were rolled. 3. <botany> The hilum. 4. <zoology> A depression or opening in the center of the base of many spiral shells. Either one of the two apertures in the calamus of a feather. 5. <geometry> One of foci of an ellipse, or other curve. A point of a surface at which the curvatures of the normal sections are all equal to each other. A sphere may be osculatory to the surface in every direction at an umbilicus. Synonym: umbilic. Origin: L. See Umbilic. Source: Websters Dictionary (01 Mar 1998) |
| umbo | <otolaryngology> The area on the tympanic membrane where the malleus attaches. (27 Sep 1997) |
| umbo membranae tympani | The projection on the inner surface of the tympanic membrane at the end of the manubrium of the malleus; this corresponds to the most depressed point of the membrane, viewed laterally, that is commonly called the umbo. Synonym: umbo membranae tympani, umbo. (05 Mar 2000) |