Pudendal nerve
Plexus: Lumbosacral
Roots:
S2
S3
S4
Origin: Anterior division of sacral plexus
Motor innervation:
External anal sphincter
Branch: Inferior rectal nerve (from pudendal nerve)
Roots:
S2
S3
S4
Bulbospongiosus
Branch: Deep branch of the perineal nerve (from pudendal nerve)
Roots:
S2
S3
S4
Ischiocavernosus
Branch: Deep branch of the perineal nerve (from pudendal nerve)
Roots:
S2
S3
S4
External urethral sphincter
Branch: Deep branch of the perineal nerve (from pudendal nerve)
Roots:
S2
S3
S4
Sensory innervation:
Penis and clitoris
Branch: Dorsal nerve of the penis/clitoris (from pudendal nerve)
Roots:
S2
S3
S4
Anal canal
Branch: Inferior rectal nerve (from pudendal nerve)
Roots:
S2
S3
S4
Perineum
Branch: Superficial branch of the perineal nerve (from pudendal nerve)
Roots:
S2
S3
S4