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Transversus abdominis plane block — FRCA Primary MCQ

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HardAnatomyTransversus abdominis plane blockFRCA Primary

In a transversus abdominis plane block, local anaesthetic is deposited between internal oblique and transversus abdominis. Which nerves are principally targeted?

Educational content. Not a substitute for clinical judgement or local policy.

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Correct answer: C — Anterior rami from thoracic 7 to lumbar 1

The best answer is “Anterior rami from thoracic 7 to lumbar 1”. A TAP block targets the anterior rami of lower thoracoabdominal nerves, commonly described as T7 to L1, in the fascial plane between internal oblique and transversus abdominis. It does not anaesthetise visceral vagal, lumbar-plexus or upper-limb nerves.

Reference: RCoA, Primary FRCA Syllabus: https://rcoa.ac.uk/sites/default/files/documents/2026-01/Primary-FRCA-Syllabus.pdf