Cavernous nerves that innervate the clitoral erectile tissue arise from which plexus?

• A. sacral plexus
• B. uterovaginal plexus
• C. celiac plexus
• D. superior hypogastric plexus

Answer: (B)

Cavernous nerves supplying the clitoral erectile tissue come from the uterovaginal plexus, which is a branch of the inferior hypogastric (pelvic) plexus. These parasympathetic fibers, derived from the pelvic splanchnic nerves (S2–S4), travel with the vascular/nerve bundles to the corpora cavernosa and vestibular bulbs to promote erection by vasodilation. The other plexuses listed are either somatic (sacral plexus via pudendal nerve) or located more proximally to abdominal viscera (celiac, superior hypogastric), and do not give rise to the cavernous nerves of the clitoris.