Urogenital Triangle Flashcards
Describe Camper’s fascia.
- Fatty
Continuous with: - Ischiorectal fossa
- Thigh
What is Camper’s fascia replaced by in the scrotum?
Dartos smooth muscle
Where is Scarpa’s/Colle’s membranous fascia attached?
Posterior border of urogenital diaphragm
Describe the superior layer of fascia of the urogenital diaphragm.
- Deep
- Blends with perineal body/membrane
Describe the middle layer of fascia of the urogenital diaphragm.
- Sphincter urethrae
- Deep transverse perineal muscles
Describe the inferior layer of fascia in the urogenital diaphragm.
- Superficial
- Perineal membrane
What happens when the layers of the perineal membrane fuse anteriorly?
Leaves a small gap near the pubic symphysis
What do the posterior layers fuse with?
- Each other
- Membranous superficial fascia
- Perineal body
What is the space between the layers of urogenital membrane called?
Deep perineal pouch
What lies in the urogenital pouch?
- Urethra
- Sphincter urethrae
- Deep transverse perineal muscles
- Internal pudendal vessels and branches
- Pudendal nerve
What features unique to females lie in the deep perineal pouch?
- Vagina
- Dorsal nerves of clitoris
What features unique to males lie in the deep perineal pouch?
- Membranous urethra
- Dorsal nerves of penis
- Bulbourethral glands
- Penile arteries
What muscles lie in the superficial perineal pouch?
- Ischiocavernosus muscle
- Bulbospongiosus muscle
- Superficial transverse perineal muscle
What structures lie in the superficial perineal pouch?
- Urethra
- Vagina
- Clitoris
- Penis
- Nerves and vessels
Name the erectile tissue present in the superficial perineal pouch.
- Crura
- Bulb of vestibule (FEMALES)
- Bulb of penis (MALES)
Describe the perineal body.
Small fibrous structure
Where is the perineal body located?
Posterior margin of the urogenital diaphragm
What attaches to the perineal body?
- External anal sphincter
- Bulbospongiosus
- Superficial transverse perineal muscles
Identify the features of male and female erectile tissue.
What is corpus cavernosus an extension of?
Extension of crura
What is corpus spongiosum an extension of?
Extension of the bulb
Describe the sections of the urethra from the bladder to the tip of the penis.
- Pre prostatic
- Prostatic
- Membranous
- Penile
