Updated: 12/21/2021

Scalene

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https://upload.orthobullets.com/topic/10006/images/scalene muscles.jpg
https://upload.orthobullets.com/topic/10006/images/scalene and brachial plexus.jpg
https://upload.orthobullets.com/topic/10006/images/scalene and brachial plexus 2.jpg
https://upload.orthobullets.com/topic/10006/images/scalene and brachial plexus 3.jpg
  • Summary
    • Scalene
      Origin
      Transverse process of C2 to C7

      Insertion

      Anterior and medial scalene insert on first rib. Posterior scalene inserts on second rib.

      Action
      Anterior and medial scalene elevate first rib and flexes neck to same side. Posterior scalene elevates second riband flexes neck to same side.

      Innervation

      Anterior branches of the cervical spinal nerves (C3-C8)

      Arterial Supply

      Ascending cervical artery (branch of the thyrocervical trunk)

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Private Note