Prostatic urethra
The male urethra laid open on its anterior (upper) surface. (Prostatic part labeled at upper right.)
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.

[edit] Additional images

Lobes of prostate	Zones of prostate	Structure of the penis	Vertical section of bladder, penis, and urethra.
Vesiculæ seminales and ampullæ of ductus deferentes, seen from the front.

[edit] External links

• Prostatic+urethra at eMedicine Dictionary
• SUNY Cross Section malepel2-4
• Cross section at UV pelvis/pelvis-e12-15
• SUNY Labs 44:05-0201 - "The Male Pelvis: The Prostate Gland"

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 As such, some of the information contained within it may be outdated.

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