Sources
Help build the largest human-edited directory on the web.
Submit a site - Become an editor
Wikipedia. Licensed under the GNU Free Documentation License.
Are you an expert in this subject? Join the discussion and share your knowledge at Wikipedia.org.
Urethral crest
From Wikipedia, the free encyclopedia
| Urethral crest | |
|---|---|
 |
|
| The male urethra laid open on its anterior (upper) surface. (Urethral crest labeled at upper right.) | |
| Latin | crista urethralis urethrae masculinae, crista urethralis urethrae femininae |
| Gray's | subject #256 1234 |
| Dorlands/Elsevier | c_62/13538713 |
Upon the posterior wall of the prostatic urethra is a narrow longitudinal ridge, the urethral crest, formed by an elevation of the mucous membrane and its subjacent tissue.
It is from 15 to 17 mm. in length, and about 3 mm. in height, and contains muscular and erectile tissue.
When distended, it may serve to prevent the passage of the semen backward into the bladder.
 Vesiculæ seminales and ampullæ of ductus deferentes, seen from the front. |
- SUNY Labs 44:st-2200 - "The Male Pelvis: Urethral crest"
- Norman/Georgetown pelvis
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 As such, some of the information contained herein may be outdated.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.
 |
This anatomy article is a stub. You can help Wikipedia by expanding it. |
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