Deep perineal pouch

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Deep perineal pouch
Coronal section of anterior part of pelvis, through the pubic arch. Seen from in front. (Deep perineal pouch not labeled, but is between the "superior layer" and "inferior layer" labeled at bottom left.)
Vertical section of bladder, penis, and urethra. (Cowper's gland and membranous portion of urethra visible at center bottom.)
Latin saccus profundus perinei
Gray's subject #120 428
Artery branches of internal pudendal artery
Vein branches of internal pudendal veins
Nerve branches of perineal nerve
Dorlands/Elsevier s_01/12717311

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List of terms related to Deep perineal pouch

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]


The deep perineal pouch (also deep perineal space) is an anatomical term that refers to the partially enclosed space in the perineum, located superiorly to the perineal membrane.


Unlike the superficial perineal pouch, the deep perineal pouch lacks a superior border. It extends up into the pelvis.


The deep perineal pouch contains:

"Urogenital diaphragm"

Older texts have asserted the existence of an "urogenital diaphragm", which was described as a layer of the pelvis that separates the deep perineal sac from the upper pelvis, lying between the inferior fascia of the urogenital diaphragm and superior fascia of the urogenital diaphragm.

While this term is used to refer to a layer of the pelvis that separates the deep perineal sac from the upper pelvis, such a discrete border of the sac probably does not exist.[1][2][3] [4][5]

While it has no official entry in Terminologia Anatomica, the term is still used occasionally to describe the muscular components of the deep perineal pouch[6] The urethra and the vagina, though part of the pouch, are usually said to be passing through the urogenital diaphragm, rather than part of the diaphragm itself. [2]

Some researchers still assert that such a diaphragm exists, [7] and the term is still used in the literature.[8]

The term "urogenital diaphragm" is often confused with the pelvic floor, which is a true diaphragm supporting many of the pelvic organs.

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See also


  1. Kaye K, Milne N, Creed K, van der Werf B (1997). "The 'urogenital diaphragm', external urethral sphincter and radical prostatectomy". Aust N Z J Surg. 67 (1): 40–4. PMID 9033375.
  2. 2.0 2.1 "Chapter 38: The perineal region and external genitalia". Retrieved 2007-12-09.
  3. Oelrich TM (1980). "The urethral sphincter muscle in the male". Am. J. Anat. 158 (2): 229–46. doi:10.1002/aja.1001580211. PMID 7416058.
  4. Mirilas P, Skandalakis JE (2004). "Urogenital diaphragm: an erroneous concept casting its shadow over the sphincter urethrae and deep perineal space". J. Am. Coll. Surg. 198 (2): 279–90. doi:10.1016/j.jamcollsurg.2003.07.022. PMID 14759786.
  5. Dorschner W, Biesold M, Schmidt F, Stolzenburg JU (1999). "The dispute about the external sphincter and the urogenital diaphragm". J. Urol. 162 (6): 1942–5. PMID 10569543.
  6. d_15/12293501 at Dorland's Medical Dictionary
  7. Herschorn S (2004). "Female pelvic floor anatomy: the pelvic floor, supporting structures, and pelvic organs". Rev Urol. 6 Suppl 5: S2–S10. PMID 16985905.
  8. Hruby S, Ebmer J, Dellon AL, Aszmann OC (2005). "Anatomy of pudendal nerve at urogenital diaphragm--new critical site for nerve entrapment". Urology. 66 (5): 949–52. doi:10.1016/j.urology.2005.05.032. PMID 16286101.

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