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G13: Urogenital (UG) Triangle
David A Morton
Syllabus - Pg. 3
ANAT 6010 Medical Gross Anatomy
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
1) UG Triangle 1) UG Triangle - b) Vasculature- b) VasculatureP
Female Male
1) UG Triangle 1) UG Triangle - b) Vasculature- b) VasculatureP
Female Male
Internal Internal
1) UG Triangle 1) UG Triangle - b) Vasculature- b) VasculatureP
Male
Internal
P
GAFS 5.77
P
1) UG Triangle 1) UG Triangle - b) Vasculature- b) VasculatureP
Male
Internal
1) UG Triangle 1) UG Triangle - b) Vasculature- b) VasculatureP
Male
1) UG Triangle 1) UG Triangle - c) Innervation- c) InnervationP
1) UG Triangle 1) UG Triangle - c) Innervation- c) InnervationP
GAFS 5.76a
1) UG Triangle 1) UG Triangle - c) Innervation- c) InnervationP
GAFS 5.76b
1) UG Triangle 1) UG Triangle - c) Innervation- c) InnervationP
2) Deep Perineal SpaceP
a) Boundaries
MaleFemale
2) Deep Perineal SpaceP
GAFS 5.35
GAFS 5.35
GAFS 5.35
GAFS 5.36
2) Deep Perineal Space - Male
P 39
b) Compare/contrast conte
2) Deep Perineal Space - Female
P 39
b) Compare/contrast conte
3) Superficial Perineal Pouch
MaleFemale
a) Boundaries
P
GA3) Superficial Perineal Space
M
Fema
3) Superficial Perineal Space
Male
Female
GAFS 5 71
3) Superficial Perineal Space - Male
Perineum (Coronal Section) - FemaleP
Membranous La
of Superficial Fa
In abdomen
= Scarpa’s
In Perineum
= Colles’
GAFS
P 40
3) Superficial Perineal Space
Deep Perineal Space
Male Female
Membranous urethra Membranous urethra
Deep transverse perineal muscle Deep transverse perineal muscle
Sphincter urethra muscle Sphincter urethra muscle
Internal pudendal arteries Internal pudendal arteries
Artery to bulb Artery to bulb
Deep artery of penis Deep artery of clitoris
Dorsal artery of penis Dorsal artery of clitoris
Muscular branches Muscular branches
Internal pudendal veins and branches Internal pudendal veins and branches
Pudendal nerves and branches Pudendal ne rves and branches
Bulbourethral glands and ducts ----------
---------- Tube of the vagina
P
Superficial Perineal SpaceMale 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 Spongy urethra
Perineal nerves, arteries and veins (N, A & V)
Perineal nerves, arteries and veins (N, A &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
P
THANK-YOU
