 | This article includes a list of references, related reading, or external links, but its sources remain unclear because it lacks inline citations. Please help improve this article by introducing more precise citations. (May 2015) (Learn how and when to remove this message) |
| 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[edit on Wikidata] | |
The internal urethral orifice is the opening of the urinary bladder into the urethra.
Anatomy
It is usually somewhat crescent-shaped.
Relations
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.
The mucous membrane immediately posterior to it presents a slight elevation in males - the uvula vesicae - caused by the middle lobe of the prostate.
See also
References
This article incorporates text in the public domain from page 1232 of the 20th edition of Gray's Anatomy (1918)
- ^ "orifice interne de l'urèthre l.m. - Dictionnaire médical de l'Académie de Médecine". www.academie-medecine.fr. Retrieved 2024-06-01.
External links
- Anatomy photo:44:06-0106 at the SUNY Downstate Medical Center - "The Male Pelvis: The Urethra"
 | This article related to the genitourinary system is a stub. You can help Misplaced Pages by expanding it. |