Prostatic urethra
| Prostatic urethra | |
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| The male urethra laid open on its anterior (upper) surface. (Prostatic part labeled at upper right.) | |
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| 1: Vas deferens 2: Seminal vesicle 3: Base of the prostate 4: Apex of the prostate 5: Prostatic urethra |
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| 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.
Additional images [edit]
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Lobes of prostate
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Zones of prostate
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Structure of the penis
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Vertical section of bladder, penis, and urethra.
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Vesiculæ seminales and ampullæ of ductus deferentes, seen from the front.
External links [edit]
- 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 incorporates text from a public domain edition of Gray's Anatomy.
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