Internal urethral orifice
Appearance
(Redirected from Ostium urethrae internum)
![]() | This article includes a list of references, related reading, or external links, but its sources remain unclear because it lacks inline citations. (May 2015) |
Internal urethral orifice | |
---|---|
![]() Male urinary bladder | |
![]() The interior of bladder. | |
Details | |
Identifiers | |
Latin | ostium urethrae internum |
TA98 | A08.3.01.028F A08.3.01.027M |
TA2 | 3424 |
FMA | 85264 |
Anatomical terminology |
The internal urethral orifice is the opening of the urinary bladder into the urethra.[1]
Anatomy
[edit]It is usually somewhat crescent-shaped.[citation needed]
Relations
[edit]It is formed by the neck of the urinary bladder. It opens at the apex/inferior angle of the trigone of the bladder, some 2-3 cm anteromedial to either ureteral orifice.[1]
The mucous membrane immediately posterior to it presents a slight elevation in males - the uvula vesicae - caused by the middle lobe of the prostate.[citation needed]
See also
[edit]References
[edit] This article incorporates text in the public domain from page 1232 of the 20th edition of Gray's Anatomy (1918)
- ^ a b "orifice interne de l'urèthre l.m. - Dictionnaire médical de l'Académie de Médecine". www.academie-medecine.fr. Retrieved 2024-06-01.
External links
[edit]- Anatomy photo:44:06-0106 at the SUNY Downstate Medical Center - "The Male Pelvis: The Urethra"