Muscles / Head & neck
Scalenus medius
- Head & neck
- Neck
- Intermediate layer
Also called middle scalene.
Anatomy
- Origin
- Posterior tubercles of the transverse processes of C2-C7
- Insertion
- Superior surface of the 1st rib, behind the groove for the subclavian artery
- Nerve
- Anterior rami of cervical spinal nerves (C3-C8)
Actions
- Elevates the 1st rib (forced inspiration)
- Laterally flexes the neck
References (4)
- Standring S, ed. Elsevier. Gray's Anatomy: The Anatomical Basis of Clinical Practice. 42nd ed.
- Dalley AF, Agur AMR. Wolters Kluwer. Moore's Clinically Oriented Anatomy. 9th ed.
- Neumann DA. Elsevier. Kinesiology of the Musculoskeletal System: Foundations for Rehabilitation. 3rd ed.
- Betts JG, Young KA, Wise JA, et al. OpenStax (free, openly licensed textbook). Anatomy and Physiology 2e