Sacral Plexus L4-S3 — FRCA Primary MCQ
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Correct answer: E — L4-S3 (with contribution from L4)
The sacral plexus is formed from the lumbosacral trunk (L4-L5) and the ventral rami of S1-S3. Its major branches include: sciatic nerve (L4-S3) / superior gluteal nerve (L4-S1) / inferior gluteal nerve (L5-S2) / pudendal nerve (S2-S4) / posterior cutaneous nerve of thigh (S1-S3).
Reference: RCoA 2021 Primary FRCA Curriculum