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Inferior surface

Authoring team

The inferior surface of the first rib is relatively smooth compared to superior surface:

  • posteriorly it is crossed obliquely by the first intercostal nerves and vessels
  • medially, the cervical pleura is attached and passes anteriorly in a broad band
  • at the point of greatest curvature, fibres of serratus anterior can arise
  • anterior to the tubercle at the most lateral edge, the intercostal muscles arise
  • anteriorly on the medial edge, the suprapleural membrane begins to arise

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The content herein is provided for informational purposes and does not replace the need to apply professional clinical judgement when diagnosing or treating any medical condition. A licensed medical practitioner should be consulted for diagnosis and treatment of any and all medical conditions.

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