The pudendal nerve runs alongside the internal pudendal artery in the Alcocks canal along the medial margin of the inferior pubic ramus deep to the muscles of the superficial pelvic floor.
The pudendal nerve (red arrow) runs with the internal pudendal artery (blue arrow) in the Alcocks canal. Branches from the internal pudendal artery are the inferior rectal artery (magenta arrow), the posterior scrotal artery (black arrow), and the bulbourethral artery (yellow arrow).