Urethra
The transport tube leading from the bladder to discharge urine outside the body. In males, the urethra travels through the penis, and carries semen as well as urine. In females, the urethra is shorter than in the male and emerges above the vaginal opening, as indicated here
* * *
The canal leading from the bladder, discharging the urine externally. [G. ourethra]
- anterior u. the portion of u. distal to urogenital diaphragm (external sphincter).
- female u. [TA] 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. SYN: u. feminina [TA], u. muliebris.
- u. feminina [TA] SYN: female u..
- male u. [TA] a canal about 20 cm in length that opens at the extremity of the glans penis; except for the intramural and upper prostatic parts, it gives passage to the spermatic fluid as well as urine; components include the intramural, prostatic, intermediate, and spongy urethrae. SYN: u. masculina [TA], u. virilis.
- u. masculina [TA] SYN: male u..
- membranous u. intermediate part of male u..
- u. muliebris SYN: female u..
- penile u. SYN: spongy u..
- posterior u. the portion of the u. posterior to the urogenital diaphragm (external sphincter).
- prostatic u. [TA] the prostatic part of the male u., about 2.5 cm in length, that traverses the prostate; it includes the seminal colliculus, and the ejaculatory and prostatic ducts open into it. SYN: pars prostatica urethrae [TA].
- spongy u. [TA] the portion of the male u., about 15 cm in length, which traverses the corpus spongiosum. SYN: pars spongiosa urethrae masculinae [TA], pars cavernosa, penile u., spongy part of the male u..
- u. virilis SYN: male u..

* * *

ure·thra yu̇-'rē-thrə n, pl -thras or -thrae -(.)thrē the canal that in most mammals carries off the urine from the bladder and in the male serves also as a passageway for semen
ure·thral -thrəl adj

* * *

n.
the tube that conducts urine from the bladder to the exterior. The female urethra is quite short (about 3.5 cm) and opens just within the vulva, between the clitoris and vagina. The male urethra is longer (about 20 cm) and runs through the penis. As well as urine, it receives the secretions of the male accessory sex glands (prostate and Cowper's glands and seminal vesicles) and spermatozoa from the vas deferens; thus it also serves as the ejaculatory duct.

* * *

ure·thra (u-reґthrə) [Gr. ourēthra] the membranous canal conveying urine from the bladder to the exterior of the body. See u. feminina and u. masculina and see Plate 44. urethral adj

Medical dictionary. 2011.

Look at other dictionaries:

  • Urethra — Gray s subject #256 1234 Artery Inferior vesical artery Middle rectal artery Internal pudendal artery Vein …   Wikipedia

  • urethra — canal through which urine is discharged from the bladder, 1630s, from L.L. urethra, from Gk. ourethra the passage for urine, coined by Hippocrates from ourein to urinate, from ouron (see URINE (Cf. urine)) …   Etymology dictionary

  • urethra — [yoo rē′thrə] n. pl. urethrae [yo͞o rē′thrē΄] or urethras [LL < Gr ourēthra < ouron, URINE] the duct through which urine is discharged from the bladder in most mammals: in the male, semen is also discharged through the urethra urethral adj …   English World dictionary

  • Urethra — U*re thra, n. [L., fr. Gr. ?. See {Urine}.] (Anat.) The canal by which the urine is conducted from the bladder and discharged. [1913 Webster] …   The Collaborative International Dictionary of English

  • Urēthra — (gr.), die Harnröhre. Urethrämorrhagie, Blutfluß aus der Harnröhre. Urethralgie, Schmerz in der Harnröhre. Urethralis blennorrhoea, die Gonorrhöe. Urethremphraxis (Urethrophraxia), Verstopfung der Harnröhre. Urethreurvter, Ausdehnungswerkzeug der …   Pierer's Universal-Lexikon

  • Urēthra — (lat.), die Harnröhre (s. d.) …   Meyers Großes Konversations-Lexikon

  • Urethra — Urēthra (grch.), Harnröhre; Urethrītis, Entzündung der Harnröhre; Urethrālstriktur, Harnröhrenverengerung; Urethroskopīe, Untersuchung der Harnröhre mittels Urethroskōps oder Endoskops (s.d.); Urethrospasmus, Harnröhrenkrampf; Urethrotomīe,… …   Kleines Konversations-Lexikon

  • urethra — ► NOUN Anatomy & Zoology ▪ the duct by which urine is conveyed out of the body, and which in male vertebrates also conveys semen. DERIVATIVES urethral adjective. ORIGIN Greek our thra, from ourein urinate …   English terms dictionary

  • urethra — urethral, adj. /yoo ree threuh/, n., pl. urethrae / three/, urethras. Anat. the membranous tube that extends from the urinary bladder to the exterior and that in the male conveys semen as well as urine. [1625 35; < LL < Gk ouréthra, equiv. to… …   Universalium

  • Urethra — Die Harnröhre (lat. Urethra) beginnt am unteren Ende der Harnblase und mündet bei männlichen Säugetieren auf der Eichel, bei weiblichen im Scheidenvorhof. Sie dient bei beiden Geschlechtern der Ausscheidung des Urins, bei männlichen Säugetieren… …   Deutsch Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”