Internal pudendal aery supplies all except
It arises from the anterior division of internal iliac aery. It runs on the lateral pelvic wall.It exits the pelvic cavity through the greater sciatic foramen, inferior to the piriformis foramen, to enter the gluteal region.It then curves around the sacrospinous ligament to enter the perineum through the lesser sciatic formen.It travels through the pudental canal with the internal pudental vein and the pudental nerve. ref - BDC 6e vol2 pg364
Perineum
Penis
Anal canal
Anterior abdominal wall
Abdomen and pelvis