urogenital triangle Flashcards
what are the borders of the urogenital triangle
between the pubic symphysis and the ischiopubic rami, anterior to the ischial tuberosities
what nerves and vessels pass through the lesser sciatic foramen
pudendal nerve, internal pudendal vessels
what are the divisions of the urogenital triangle
divided by the perineal membrane into a superior deep pouch and an inferior superficial pouch
what are the contents of the deep pouch aka urogenital diaphragm
external urethral sphincter and deep transverse perineal muscles with the urethra and vagina passing through
what are the features of the perineal membrane
spans the urogenital triangle
has openings for nerves, urethra and vagina
attaches to the perineal body in the midline, posteriorly
what does the male deep pouch contain
urethra and bulbourethral glands
inf boundary is the perineal membrane, superficial is fascia
what does the superficial pouch contain
genitalia
what are the features in common with the clitoris and the penis
two crura
which become corpora cavenosa that fill with blood to produce erection
a central bulb which is split by the vagina as the bulb of the vestible, in the penis it become the corpus spongiosum that contains the urethra
what are the 3 corpora of the penis
2 dorsal cavenosa
ventral spongiosum
what are the coverings of the penis
loose skin with no fat
superficial dartos fascia (merging of camper’s and scarpa’s)
skin doubles back on itself to form the prepuce and foreskin that is continuous with the glands
what are the features of the penile septum
complete proximally
pectiniform distally to even out pressures and stay straight
what surrounds the corpora cavenosa
thick tunica albuginea
and deep fascia (Buck’s)
what tissue forms the the glans as a cap over the corpora cavernosa
the corpus spongiosum
what muscle surrounds each crus of the penis
ischiocavernosus
what muscle surrounds each bulb of the penis
bulbospongiosus