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Prostatic utricle

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Title: Prostatic utricle  
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Subject: Prostate, Seminal colliculus, Paramesonephric duct, Urethra, List of homologues of the human reproductive system
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Prostatic utricle

Prostatic utricle
Vesiculae seminales and ampullæ of ductus deferentes, seen from the front.
The male urethra laid open on its anterior (upper) surface.
Latin Utriculus prostaticus,
utriculus masculinus,
vagina masculina,
sinus pocularis
Precursor Müllerian duct
Anatomical terminology

The prostatic utricle (Latin for "pouch of the prostate") is a small indentation in the prostatic urethra, at the apex of the urethral crest, on the seminal colliculus (verumontanum), laterally flanked by openings of the ejaculatory ducts. It is also known as the vagina masculina or (in older literature) vesicula prostatica.[1]


  • Structure 1
  • Function 2
  • See also 3
  • References 4
  • External links 5


It is often described as "blind", meaning that it is a duct that does not lead to any other structures.

It can sometimes be enlarged.[2][3]

Dissection of prostate showing prostatic utricle opening into the prostatic urethra.


The prostatic utricle is important, primarily, because it is the male homologue of the female uterus and vagina, usually described as derived from the Müllerian ducts,[4] although this is occasionally disputed.[5]

In 1905 Robert William Taylor stated the function of the utricle thusly: "In coitus it so contracts that it draws upon the openings of the ejaculatory ducts, and thus renders them so patulous that the semen readily passes through."[6]

See also


  1. ^ Henry Thompson (1883). The diseases of the prostatevesicula+prostatica"+utricle . J&A Churchill. 
  2. ^ Meisheri IV, Motiwale SS, Sawant VV (2000). "Surgical management of enlarged prostatic utricle". Pediatr. Surg. Int. 16 (3): 199–203.  
  3. ^ Lopatina OA, Berry TT, Spottswood SE (2004). "Giant prostatic utricle (utriculus masculinis): diagnostic imaging and surgical implications". Pediatr Radiol 34 (2): 156–9.  
  4. ^ Kawashima, A.; Sandler, C. M.; Wasserman, N. F.; LeRoy, A. J.; King, B. F.; Goldman, S. M. (1 October 2004). "Imaging of Urethral Disease: A Pictorial Review". Radiographics 24 (suppl_1): S195–S216.  
  5. ^ Shapiro E, Huang H, McFadden DE, et al. (2004). "The prostatic utricle is not a Müllerian duct remnant: immunohistochemical evidence for a distinct urogenital sinus origin". J. Urol. 172 (4 Pt 2): 1753–6; discussion 1756.  
  6. ^ R. W. Taylor. "A practical treatise on sexual disorders of the male and female". New York and Philadelphia, 1897; 3rd edition, 1905. P. 48

External links

  • Anatomy photo:44:05-0204 at the SUNY Downstate Medical Center—"The Male Pelvis: The Prostate Gland"
  • pelvis at The Anatomy Lesson by Wesley Norman (Georgetown University) (malebladder)
  • figures/chapter_34/34-3.HTM — Basic Human Anatomy at Dartmouth Medical School
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