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Internal urethral orifice
From Wikipedia, the free encyclopedia
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The internal urethral orifice is the opening of the urinary bladder into the urethra.[1]
 | This article includes a list of references, related reading, or external links, but its sources remain unclear because it lacks inline citations. (May 2015) |
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Anatomy
It is usually somewhat crescent-shaped.[citation needed]
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.[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]
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See also
References
External links
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