Pudendal Nerve S2-S4 — FRCA Primary MCQ

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ModerateAnatomyPudendal Nerve S2-S4FRCA Primary

The pudendal nerve arises from which nerve roots?

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Correct answer: B — S2-S4

The pudendal nerve (S2 S3 S4) exits the pelvis through the greater sciatic foramen / hooks around the sacrospinous ligament / and re-enters the pelvis through the lesser sciatic foramen to reach the perineum via the pudendal canal (Alcock's canal). Pudendal nerve block provides perineal anaesthesia for episiotomy and forceps delivery.

Reference: RCoA 2021 Primary FRCA Curriculum