Prostatic urethra
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| 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 |
| Dorlands/Elsevier | p_07/12617709 |
The prostatic urethra, the widest and most dilatable part of the 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
- Dictionary at eMedicine Prostatic+urethra
- SUNY Cross Section malepel2-4
- Cross section at UV pelvis/pelvis-e12-15
- SUNY Labs 44:05-0201 - "The Male Pelvis: The Prostrate 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 As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.
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Scrotum : layers (skin, Dartos, External spermatic fascia, Cremaster, Internal spermatic fascia) - Perineal raphe - Spermatic cord
Testes: layers (Tunica vaginalis, Tunica albuginea), Appendix, Mediastinum, Lobules, Septa, Leydig cell, Sertoli cell, Blood-testis barrier
Spermatogenesis: Spermatogonium, Spermatocytogenesis, Spermatocyte, Spermatidogenesis, Spermatid, Spermiogenesis, Spermatozoon
seminal tract: Seminiferous tubules (Tubuli seminiferi recti, Rete testis, Efferent ducts) - Epididymis (Appendix) - Vas deferens - Ejaculatory duct Seminal colliculus
urinary tract: Internal urethral orifice - Urethra (Prostatic, Intermediate, Spongy) - Urethral crest - Urethral gland - External urethral orifice
Penis: Corpus cavernosum - Corpus spongiosum - Navicular fossa of male urethra - Glans penis - Fundiform ligament - Suspensory ligament - Foreskin - Frenulum
accessory glands: Seminal vesicles (Excretory duct of seminal gland) - Prostate (Prostatic utricle, Prostatic sinus) - Bulbourethral glands
