G13: Urogenital (UG) Triangle

Syllabus - Pg. 3

ANAT 6010 Medical Gross Anatomy David A Morton 1) UG Triangle - a)Overview

• Anterior half of the perineum • Contains roots of external genitalia and openings of the urogenital system

A

P

Pelvis - Inferior view

GAFS 5.32 Levator ani m./Pelvic diaphragm

GAFS 5.68 UG Triangle - Boundaries

GAFS 5.68 UG Triangle - Orientation UG Triangle - Orientation UG Triangle - Orientation UG Triangle - Orientation

GAFS 5.37 UG Triangle - Boundaries

GAFS 5.68 UG Triangle - Boundaries

GAFS 5.69 UG Triangle - Boundaries

GAFS 5.69 Function

GAFS 5.72 P 1)1) UGUG TriangleTriangle -- b)b) VasculatureVasculature Female Male P 1)1) UGUG TriangleTriangle -- b)b) VasculatureVasculature Female Male Internal Internal P 1)1) UGUG TriangleTriangle -- b)b) VasculatureVasculature Male

Internal P

GAFS 5.77 P P 1)1) UGUG TriangleTriangle -- b)b) VasculatureVasculature Male

Internal P 1)1) UGUG TriangleTriangle -- b)b) VasculatureVasculature Male P 1)1) UGUG TriangleTriangle -- c)c) InnervationInnervation P 1)1) UGUG TriangleTriangle -- c)c) InnervationInnervation

GAFS 5.76a P 1)1) UGUG TriangleTriangle -- c)c) InnervationInnervation

GAFS 5.76b P 1)1) UGUG TriangleTriangle -- c)c) InnervationInnervation P 2) Deep Perineal Space a) Boundaries

Female Male P 2) Deep Perineal Space

GAFS 5.35 GAFS 5.35 GAFS 5.35 2) Deep Perineal Space - Male

GAFS 5.36

b) Compare/contrast conte

P39 2) Deep Perineal Space - Female

b) Compare/contrast conte

P39 3) Superficial Perineal Pouch a) Boundaries

Female Male

P 3) Superficial Perineal Space GA Fema

M 3) Superficial Perineal Space

Female

Male

GAFS 5 71 3) Superficial Perineal Space - Male P Perineum (Coronal Section) - Female Membranous La of Superficial Fa

In abdomen = Scarpa’s In Perineum = Colles’

GAFS 3) Superficial Perineal Space

P40 P Deep Perineal Space

Male Female Membranous Deep transverse perineal muscle Deep transverse perineal muscle Sphincter urethra muscle Sphincter urethra muscle Internal pudendal Internal pudendal arteries to bulb Artery to bulb Deep artery of Deep artery of Dorsal artery of penis Dorsal artery of clitoris Muscular branches Muscular branches Internal pudendal and branches and branches Pudendal nerves and branches Pudendal ne rves and branches Bulbourethral glands and ducts ------Tube of the vagina

P Superficial Perineal Space

Male Female Roots of external genitalia Roots of external genitalia Bulb/corpus spongiosum penis* Bulb/bulbovestibuli Crus/corpora cavernosa penis** Crus/corpora cavernosa clitoris** Bulbospongiosa muscle Bulbovestibuli muscle Ischiocavernosa musc le Ischiocavernosa muscle Spongy urethra Perineal nerves, arteries and veins (N, A & Perineal nerves, arteries and veins (N, A & V) V) Posterior scrotal N, A & V Posterior labial N, A & V Muscular branches Muscular branches Superfic ial transverse perineal muscle Superficial transverse perineal muscle ------Greater vestibular glands and ducts ------Tube of the vagina * Changes names distal to the suspensory ligament to corpus spongiosa penis ** Changes names distal to the suspensory ligament to corpora cavernosa penis/clitoris THANK-YOU