Urogenital diaphragm

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Urogenital diaphragm
Median sagittal section of pelvis, showing arrangement of fasciae. (Urogenital diaphragm labeled at bottom center, and fascia of urogenital diaphragm labeled at center left.)
Coronal section of anterior part of pelvis, through the pubic arch. Seen from in front. (Fascia of urogenital diaphragm labeled at bottom center.)
Gray's	subject #120 428
Nerve	S3
Dorlands/Elsevier	d_15/12293501

The urogenital diaphragm is the traditional (but invalid) anatomical term for 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.

Anatomy

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. While it has no official entry in Terminologia Anatomica, the term is still used casually to refer to the following structures (taken together) :

• sphincter urethrae muscle (external urethral muscle )
• deep transverse perineal muscle
• superficial transverse perineal muscle
• perineal membrane

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

See also

• Perineum
• Pelvic floor

External links

• SUNY Labs 41:10-0102 - "The Female Perineum: The Perineal Nerve"
• SUNY Figs 43:04-09 - "The urinary bladder and the urethra as seen in a frontal section of the female pelvis."
• SUNY Labs 44:05-0102 - "The Male Pelvis: The Prostate Gland"
• Norman/Georgetown perineum (maleugtriangle3)
• Human anatomy at Dartmouth figures/chapter_35/35-1.HTM
• 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.

v • d • e General anatomy of torso
Thorax/ Thoracic cavity	Mediastinum (Superior, Anterior, Middle, Posterior) • Superior thoracic aperture • Inferior thoracic aperture • Triangle of auscultation • Intercostal space • Thoracic plane • Thoracic wall/Thoracic cage - fascia (Pectoral fascia, Clavipectoral fascia, Thoracolumbar fascia) • Chest • Midsternal line
Thoracic diaphragm	openings (Caval opening, Esophageal hiatus, Aortic hiatus, Foramina of Morgagni) • Central tendon • Crus of diaphragm • arcuate ligaments (Lateral, Medial, Median)
Abdomen/ Abdominal cavity	Retroperitoneum • Paracolic gutters • Hepatobiliary triangle anterior abdominal wall (Arcuate line, Linea alba, Tendinous intersection, Linea semilunaris, McBurney's point, Traube's space, Inguinal triangle) • Inguinal canal (Deep inguinal ring, Superficial inguinal ring, Intercrural fibers, Crura of superficial inguinal ring) • Lumbar triangle • regions (Epigastrium, Hypochondrium, Umbilical region, Latus, Hypogastrium, Inguinal region) • planes (Transpyloric plane, Intertubercular plane, Midclavicular line) fascia (Fascia of Camper, Fascia of Scarpa, Transversalis fascia, Renal fascia, Rectus sheath)
Pelvis/ Pelvic cavity	Pelvic floor • Retropubic space fascia (Pelvic fascia, Superior fascia of diaphragm of pelvis, Inferior fascia of diaphragm of pelvis, Fascia of the Obturator internus, Tendinous arch, Iliac fascia, Iliopectineal fascia)
Perineum	Anal triangle (Ischioanal fossa, Pudendal canal, Anococcygeal raphe) Urogenital triangle (Superficial perineal pouch, Deep perineal pouch) Perineal body fascia (Dartos/fascia of perineum/superficial perineal fascia/Fascia of Colles, Perineal membrane/"Inferior fascia of UGD", "Superior fascia of UGD")

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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 .