Prostatic utricle
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| 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 |
| Gray's | subject #256 1234 |
| Precursor | Müllerian duct |
| Dorlands/Elsevier | u_04/12841383 |
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Overview
The prostatic utricle (Latin for "pouch of the prostate") is a small indentation located in the prostatic urethra, at the apex of the urethral crest, on the seminal colliculus, laterally flanked by openings of the ejaculatory ducts. It is also known as the vagina masculina.
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.[1][1]
Embryology
It may serve no function. However, in "A Practical treatise on sexual disorders of the male and female" 3rd ed. By Robert William Taylor, it states "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."[1]
It is important primarily because it is the male homologue of the female uterus and vagina, usually described as derived from the Müllerian ducts, though this is occasionally disputed.[1] (See List of homologues of the human reproductive system for more details.) The paramesonephric (Mullerian) duct obliterates in the male, forming the prostatic utricle and in the female becomes the fallopian tube and uterus.
References
External links
- Prostatic+utricle at eMedicine Dictionary
- SUNY Labs 44:05-0204—"The Male Pelvis: The Prostate Gland"
- Norman/Georgetown pelvis (malebladder)
- Human anatomy at Dartmouth figures/chapter_34/34-3.HTM
Acknowledgement and Attribution Regarding Sources of Content
Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .
