The posterior labial arteries are branches of the internal pudendal artery.
inferior pancreaticoduodenal · intestinal (jejunal, ileal, arcades, vasa recta) · ileocolic (colic, anterior cecal, posterior cecal, ileal branch, appendicular) · right colic · middle colic
left colic · sigmoid · superior rectal · marginal
iliolumbar (lumbar, iliac) · lateral sacral · superior gluteal
inferior epigastric (cremasteric, round ligament) · deep circumflex iliac · femoral