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• middle rectal artery, supplying the distal part of the rectum, superior part of the anal canal and partially the prostate gland. The rectum is additionally supplied by branches of the superior rectal artery and the anal canal by the branches of the inferior rectal artery
• internal pudendal artery, passing through the greater sciatic foramen near the ischial spine. Its course distal to this point was previously described. ( see Laboratory Forty-Two)
• inferior gluteal artery, passing through the greater sciatic foramen into the gluteal region

Links and References:
Grant's: 3.55
Netter (1ed.): 373, 377 (2ed.): 369, 373
Rohen/Yokochi: 338, 339