Lecture Notes - Perineum & External Genitalia

The streaming video of the 2004-5 lab overview is available on the web (password protected).
The computer presentation used by Ms. Stein in lecture is available on the web (password protected). You can also download the PowerPoint presentation to print or review.

Perineum - inferior to pelvic diaphragm
Female Male
2 corpora cavernosa
shaft of clitoris
diverge as 2 crura along ischiopubic rami
crura covered by ischiocavernosus muscle
2 corpora cavernosa
shaft of penis
diverges as 2 crura
crura covered by ischiocavernosus m.
2 bulbs of the vestibule
glans of clitoris
covered by bulbospongiosus m.
greater vestibular glands
1 corpus spongiosus
glans of penis
spongy urethra
bulb covered by bulbospongiosus m.
perineal body
muscle fibers from:
bulbospongiosus, external anal sphincter
& superficial transverse perineal
central tendinous point
mm. fibers from:
bulbospongiosus, ext. anal sphincter
& superficial transverse perineal
sphincter urethrae (urethrovaginal sphincter & compressor urethrae) sphincter urethrae
bulbourethral glands


Pudendal Nerve Internal Pudendal Artery