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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
Latin pars prostatica urethrae
Gray's subject #256 1234

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

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.

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This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained within it may be outdated.

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