Subclavius

Written by Oliver Jones

Last updated October 7, 2022 • 4 Revisions

The subclavius is a muscle of the anterior chest wall. It is small muscle, located directly underneath the clavicle.

  • Attachments: Originates from the junction of the 1st rib and its costal cartilage. Inserts onto the inferior surface of the middle third of the clavicle.
  • Function: Anchors and depresses the clavicle.
  • Innervation: Nerve to subclavius.
  • Blood supply: Clavicular branch of thoracoacromial artery.

Fig 1
The subclavius muscle of the anterior chest wall.

 

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