The corpus cavernosum intercommunicating venous drainage system.

A series of cavernosograms were used to study the corpus cavernosum superficial and deep dorsal venous system. Within this drainage system exists an intricate circumflex venous interconnective network of vessels. In addition, each corpus cavernosum intercommunicates with its opposite corpus cavernosum through median septal apertures. The cavernosum venous system, unlike the venous drainage from the glans penis, delays venous drainage and in doing so assists in maintaining erections.