| ureters | The tubes that carry urine from each kidney to the bladder. (12 Dec 1998) |
|---|---|
| urethan | Urethane NH2COOC2H5;has antimitotic activity; formerly used medically as a hypnotic, but now more often used as an anaesthetic for laboratory animals. Synonym: ethyl carbamate. (05 Mar 2000) |
| urethanase | <enzyme> From bacillus licheniformis isolated from mouse intestine; catalyses the decomposition of urethane to ethanol, ammonia and co2 Registry number: EC 3.5.1.75 Synonym: urethane hydrolase (26 Jun 1999) |
| urethane | <chemistry> A white crystalline substance, NH2.CO.OC2H5, produced by the action of ammonia on ethyl carbonate. It is used somewhat in medicine as a hypnotic. By extension, any one of the series of related substances of which urethane proper is the type. Source: Websters Dictionary (01 Mar 1998) |
| urethr- | See: urethro-. (05 Mar 2000) |
| urethra | <anatomy, urology> The tube that conveys urine from the bladder to the outside. In the female it measures 25.4 to 38.1 millimetres, in the male 25 centimetres. (27 Sep 1997) |
| urethra feminina | A canal about 4 cm long passing from the bladder, in close relation with the anterior wall of the vagina and having a long axis that parallels that of the vagina, opening in the vestibule of the vagina posterior to the clitoris and anterior to the vaginal orifice. Synonym: urethra feminina, urethra muliebris. (05 Mar 2000) |
| urethra masculina | A canal about 20 cm in length opening at the extremity of the glans penis; it gives passage to the spermatic fluid as well as the urine. Synonym: urethra masculina, urethra virilis. (05 Mar 2000) |
| urethra muliebris | A canal about 4 cm long passing from the bladder, in close relation with the anterior wall of the vagina and having a long axis that parallels that of the vagina, opening in the vestibule of the vagina posterior to the clitoris and anterior to the vaginal orifice. Synonym: urethra feminina, urethra muliebris. (05 Mar 2000) |
| urethra virilis | A canal about 20 cm in length opening at the extremity of the glans penis; it gives passage to the spermatic fluid as well as the urine. Synonym: urethra masculina, urethra virilis. (05 Mar 2000) |
| urethral | Of or pertaining to the urethra. <medicine> Urethral fever, fever occurring as a consequence of operations upon the urethra. Source: Websters Dictionary (01 Mar 1998) |
| urethral artery | <anatomy, artery> Origin, perineal artery; distribution, membranous urethra. Synonym: arteria urethralis. (05 Mar 2000) |
| urethral calculus | A stone impacted in urethra. May have formed proximally and gotten stuck there or may have formed in urethra; uncommon. (05 Mar 2000) |
| urethral carina of vagina | The lower part of the anterior column of the vagina, in relation with the urethra. Synonym: carina urethralis vaginae, carina vaginae. (05 Mar 2000) |
| urethral caruncle | A small, fleshy, sometimes painful protrusion of the mucous membrane at the meatus of the female urethra; it may be telangiectatic, papillomatous, or composed of granulation tissue. (05 Mar 2000) |