The inferior rectal artery
(inferior hemorrhoidal artery
) is an artery
that supplies blood to the lower half of the anal canal
The inferior rectal artery arises from the internal pudendal artery
as it passes above the ischial tuberosity
Piercing the wall of the pudendal canal, it divides into two or three branches which cross the ischioanal fossa, and are distributed to the muscles and integument of the anal region, and send offshoots around the lower edge of the gluteus maximus to the skin of the buttock.
They anastomose with the corresponding vessels of the opposite side, with the superior and middle rectal arteries, and with the perineal artery.
- - "Inferior view of female perineum, branches of the internal pudendal artery."
- - "Branches of internal pudendal artery in the male perineum."