The lower part of the external

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 vaginal venous plexus in the female. A free communication between the portal and systemic venous ...

is drained by the inferior rectal veins (or inferior hemorrhoidal veins) into the

internal pudendal vein The internal pudendal veins (internal pudic veins) are a set of veins in the pelvis. They are the venae comitantes of the internal pudendal artery. Internal pudendal veins are enclosed by pudendal canal, with internal pudendal artery and pudendal ...

. Pathologies involving the Inferior rectal veins may cause lower GI bleeding. Depending on the degree of inflammation, they are given a grade level ranging from 1 through 4.

Additional images

File:Gray405.png, The perineum. The integument and superficial layer of superficial fascia reflected.

References

Veins of the torso {{circulatory-stub