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171:: the anterior wall of the membranous urethra is thus prolonged for a short distance in front of the urogenital diaphragm; it measures about 2 cm in length, while the posterior wall which is between the two fasciæ of the diaphragm is only 1.25 cm long. The anatomical variation in membranous urethral length measurements in men have been reported to range from 0.5 cm to 3.4 cm.
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The hinder part of the urethral bulb lies in apposition with the inferior fascia of the urogenital diaphragm, but its upper portion diverges somewhat from this
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The mucosal internal lining of the membranous urethra features some longitudinal folds which disappear when the urethra becomes distended.
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The male urethra laid open on its anterior (upper) surface. (Membranous part labeled at upper right.)
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distally. It measures some 12 mm in length. It traverses the pelvic floor. It is surrounded by the
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Dissection of the prostate showing the prostatic and membranous portions of the urethra (unlabeled)
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It extends downward and forward, with a slight anterior concavity, between the apex of the
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Knowledge articles incorporating text from the 20th edition of Gray's
Anatomy (1918)
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253:"partie membraneuse de l'urèthre - Dictionnaire médical de l'Académie de Médecine"
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The membranous portion of the urethra is surrounded by the fibers of the
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at the SUNY Downstate
Medical Center - "The Female Pelvis: The Urethra"
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at the SUNY Downstate
Medical Center - "The Male Pelvis: The Urethra"
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is the shortest, least dilatable, and, with the exception of the
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120:. It extends from the apex of the prostate proximally to the
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Grossanatomy/dissector/practical/pelvis/pelvis11.html
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230:Vertical section of bladder, penis, and urethra.
197:; on either side near its termination are the
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130:superior fascia of the urogenital diaphragm
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160:about 2.5 cm below and behind the
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279:This article incorporates text in the
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128:, which is in turn envelopped by the
67:pars intermedia urethrae masculinae,
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69:pars membranacea urethrae masculinae
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191:transverse ligament of the pelvis
110:intermediate part of male urethra
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742:Trabeculae of corpus spongiosum
732:Trabeculae of corpora cavernosa
176:sphincter urethrae membranaceae
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183:deep dorsal vein of the penis
16:Narrowest part of the urethra
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116:, the narrowest part of the
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873:Internal urethral sphincter
287:of the 20th edition of
126:external urethral sphincter
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1008:Posterior scrotal arteries
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1003:Anterior scrotal arteries
978:Internal spermatic fascia
963:External spermatic fascia
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922:External urethral orifice
903:External sphincter muscle
878:Internal urethral orifice
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1023:Posterior scrotal nerves
826:Internal pudendal artery
357:Male reproductive system
310:Anatomy photo:44:06-0103
304:Anatomy photo:43:08-0102
257:www.academie-medecine.fr
1035:Posterior scrotal veins
1018:Anterior scrotal nerves
846:Internal pudendal veins
510:Tubuli seminiferi recti
218:Structure of the penis
195:arcuate pubic ligament
88:Anatomical terminology
664:Bulbourethral glands
505:Seminiferous tubules
441:Blood–testis barrier
199:bulbourethral glands
158:urogenital diaphragm
927:Lacunae of Morgagni
715:Suspensory ligament
588:Testicular arteries
464:Spermatocytogenesis
181:In front of it the
154:bulb of the urethra
973:Cremasteric fascia
710:Fundiform ligament
637:Seminal colliculus
583:Rectovesical pouch
564:Pampiniform plexus
542:Superior ligaments
537:Inferior ligaments
156:, perforating the
106:membranous urethra
22:Membranous urethra
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737:Corpus spongiosum
727:Corpora cavernosa
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642:Ejaculatory ducts
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474:Spermatidogenesis
205:Additional images
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811:Arteries of bulb
793:Tunica albuginea
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615:Seminal vesicles
607:Accessory glands
593:Testicular veins
404:Tunica vasculosa
399:Tunica albuginea
394:Tunica vaginalis
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571:Vasa deferentia
559:Spermatic cords
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451:Spermatogenesis
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1087:Male urethra
915:Lacuna magna
893:Intermediate
892:
841:Vein of bulb
836:Dorsal veins
527:Epididymides
515:Retia testes
489:Spermatozoon
469:Spermatocyte
431:Leydig cells
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260:. Retrieved
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189:between the
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781:Superficial
547:Stereocilia
416:Mediastinum
185:enters the
56:Identifiers
1076:Categories
262:2024-05-20
236:References
999:Arteries
968:Cremaster
888:Prostatic
807:Arteries
479:Spermatid
383:Testicles
285:page 1235
144:Relations
985:Ligament
759:Frenulum
754:Foreskin
678:External
627:Prostate
576:Ampullae
532:Appendix
411:Appendix
365:Internal
193:and the
152:and the
150:prostate
1066:Anatomy
1014:Nerves
949:Layers
942:Scrotum
868:Urethra
852:Nerves
657:Utricle
421:Lobules
390:Layers
136:Anatomy
118:urethra
51:Details
1052:Portal
995:Septum
898:Spongy
832:Veins
798:Septum
776:Fascia
764:Corona
293:(1918)
187:pelvis
169:fascia
990:Raphe
803:Raphe
749:Glans
700:Crura
687:Penis
652:Ducts
647:Sinus
498:Other
426:Septa
283:from
92:[
81:19674
62:Latin
953:Skin
786:Deep
722:Body
705:Bulb
695:Root
104:The
108:or
76:FMA
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244:^
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349:e
342:t
335:v
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96:]
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
