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Scalenus Medius
Region: Head & Neck Muscles · All head & neck muscles
Scalenus Medius at a glance
| Origin | Transverse processes of C2–C7 vertebrae |
|---|---|
| Insertion | Upper surface of the first rib, behind the subclavian artery groove |
| Actions | Elevates the first rib in breathing; Tilts the neck to the same side |
| Nerve supply | Cervical spinal nerves C3–C8 |
◆ Good to know
The brachial plexus and subclavian artery pass through the gap between scalenus anterior and scalenus medius — the space that can narrow in thoracic outlet syndrome.
More Head & Neck Muscles
Please note: This page is an anatomy education summary for students and curious readers, not medical advice. Attachment points are given in their classic short form; individual anatomy varies, and detailed dissection-level descriptions belong in an anatomy atlas.