Alcocks canal (synonym: pudendal canal) is a fascial compartment on the lateral wall of the ischioanal fossa that contains the pudendal nerve, the internal pudendal artery and the internal pudendal vein.
The yellow Alcocks canal (cyan arrows) contains the pudendal nerve (magenta arrows). Inferior rectal nerve (green arrow), dorsal nerve of the penis (black arrow), deep and superficial (blue and grey arrows) perineal nerves, sacrospinous (magenta asterix) and sacrotuberous (green asterix) ligaments, spinal nerve roots (red arrows).