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Neurovascular Bundle Between Internal and Innermost Intercostal — FRCA Primary MCQ

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ModerateAnatomyNeurovascular Bundle Between Internal and Innermost IntercostalFRCA Primary

Regarding the anatomy of the intercostal space the innermost intercostal muscle is separated from the internal intercostal muscle by:

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Correct answer: A — The neurovascular bundle running between the two muscle layers

The intercostal neurovascular bundle (VAN) runs between the internal intercostal muscle and the innermost intercostal muscle (which together form a split muscle layer). This plane is the target for intercostal nerve block and the plane through which a chest drain is inserted. The parietal pleura lines the inner surface of the innermost intercostal muscle.

Reference: RCoA 2021 Primary FRCA Curriculum