Prostatic urethra

The prostatic urethra, the widest and most dilatable part of the urethra canal, is about 3 cm long.

Prostatic urethra
Gray1142.png
The male urethra laid open on its anterior (upper) surface. (Prostatic part labeled at upper right.)
Illu quiz prostate01.jpg
1: Vas deferens
2: Seminal vesicle
3: Base of the prostate
4: Apex of the prostate
5: Prostatic urethra
Details
Identifiers
Latinpars prostatica urethrae
TA98A09.4.02.004
TA23445
FMA19673
Anatomical terminology

It runs almost vertically through the prostate from its base to its apex, lying nearer its anterior than its posterior surface; the form of the canal is spindle-shaped, being wider in the middle than at either extremity, and narrowest below, where it joins the membranous portion.

A transverse section of the canal as it lies in the prostate is horse-shoe-shaped, with the convexity directed forward.

The keyhole sign, in ultrasound, is associated with a dilated bladder and prostatic urethra.

Additional imagesEdit

ReferencesEdit

This article incorporates text in the public domain from page 1234 of the 20th edition of Gray's Anatomy (1918)

External linksEdit