Prostatic urethra
| 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 | |
| Details | |
| Identifiers | |
| Latin | pars prostatica urethrae |
| TA98 | A09.4.02.004 |
| TA2 | 3445 |
| FMA | 19673 |
| Anatomical terminology | |
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.
The keyhole sign, in ultrasound, is associated with a dilated bladder and prostatic urethra.
Additional images
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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.
References
[edit ]Public domain This article incorporates text in the public domain from page 1234 of the 20th edition of Gray's Anatomy (1918)
External links
[edit ]- Anatomy image: malepel2-4 at the College of Medicine at SUNY Upstate Medical University
- Cross section image: pelvis/pelvis-e12-15—Plastination Laboratory at the Medical University of Vienna
- Anatomy photo:44:05-0201 at the SUNY Downstate Medical Center - "The Male Pelvis: The Prostate Gland"
- Chronic Prostatitis - Four Major Symptoms and Three Lifestyle To Follow
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