Urogenital triangle

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Urogenital triangle
Muscles of the female perineum. (Urogenital triangle is roughly equal to top half of diagram.)
Muscles of male perineum. (Urogenital triangle is roughly equal to top half of diagram.)
Latin	regio urogenitalis
Dorlands/Elsevier	r_07/12701076

The urogenital triangle is the anterior part of the perineum. In females, it contains the vagina and associated parts of the external genitalia.

Structure

The urogenital triangle is the area bound by a triangle with one vertex at the pubic symphysis and the two other vertices at the ischiopubic rami of the pelvic bone.

Components

As might be expected, the contents of the urogenital triangle differ greatly between the male and the female. Some of the components include:

• Posterior scrotal nerves / Posterior labial nerves
• Urethra
• Bulbourethral gland / Bartholin's gland
• Muscles
  • Transversus perinei superficialis muscle
  • Ischiocavernosus muscle
  • Bulbospongiosus muscle
• Crus penis / Clitoral crura
• Bulb of penis / vestibular bulb

Additional images

Articulations of pelvis. Anterior view.

The superficial branches of the internal pudendal artery.

The posterior aspect of the rectum exposed by removing the lower part of the sacrum and the coccyx.

See also

• Anal triangle

External links

• SUNY Labs 41:01-0201 - "The Female Perineum: Boundaries of the Female Perineum"
• Norman/Georgetown perineum (perineumboundaries)

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")