MAIN VESSELS IN THE PELVIS

The internal iliac artery supplies blood to the pelvic wall and the pelvic organs. The sacral median artery courses over the ventral surface of the sacrum and continues as the median caudal artery in the tail.

The internal pudendal artery courses at the inside of the pelvic wall and branches off the prostatic artery or the vaginal artery, which continues cranially as the uterine artery. This vessel also detaches branches to the rectum, bladder, and urethra. Near the anus the internal pudendal artery detaches the ventral perineal artery before continuing as the artery of the penis or clitoris.