Rectal venous plexus
（重定向自Hemorrhoidal plexus）
The rectal venous plexus (or hemorrhoidal plexus) surrounds the rectum, and communicates in front with the vesical venous plexus in the male, and the uterovaginal plexus in the female.
A free communication between the portal and systemic venous systems is established through the rectal venous plexus.