Editing Penis (section)

=== Venous drainage ===

* Drainage from the 3 corpora originates in tiny venules leading from the peripheral sinusoids immediately beneath the tunica albuginea. These venules travel in the trabeculae between the tunica and the peripheral sinusoids to form the subtunical venous plexus before exiting as the emissary veins
* '''Deep dorsal vein'''
** '''Main venous drainage of the glans penis and distal two thirds of the corpora cavernosa'''
** '''Usually a single vein, but sometimes more than one deep dorsal vein exists'''
** '''Beneath Buck fascia and runs between the paired dorsal arteries''' (see above)
** '''Travels between the corporal bodies and runs upward behind the symphysis pubis, between the inferior pubic arch and the striated urinary sphincter, to join the periprostatic venous plexus'''
** '''Trifurcates into'''
*** '''Central superficial branch'''
**** Pierces endopelvic fascia between puboprostatics
**** Drains retropubic fat, anterior bladder and anterior prostate
**** Outside prostatic fascia
**** '''Drains into the internal pudendal vein'''
*** '''2 lateral plexuses'''
**** Sweep on lateral surface of prostate
**** Drain prostate and rectum; these then communicate with vesical plexuses on lower part of bladder
**** 3-5 inferior vesical veins emerge from these lateral vesical plexuses and '''drain into the internal iliac vein'''
**** In females, the dorsal clitoral vein bifurcates to empty into lateral vaginal plexuses; these connect with vesical, uterine, ovarian, and rectal plexuses to drain into the internal iliac vein
**** Connections exist between pelvic plexuses and emissary veins of pelvic bones and vertebral plexuses; proposed route for dissemination of pelvic processes to pelvic & axial bone
*** The veins of the three systems communicate variably with each other.
* '''Superficial dorsal vein'''
** '''External to Buck fascia'''
** '''Drains into saphenous vein'''