Superficial and deep perineal nn

Branches of the perineal n., which is a branch of the pudendal n.  The superfical perineal n. becomes the posterior scrotal nn. in men and the posterior labial nn. in women.  The deep perineal n. provides somatic motor innervation to the bulbospongiosus m., ischiocavernosus m., and sphincter urethrae m.