Muscles / Head & neck
Scalenus posterior
- Head & neck
- Neck
- Intermediate layer
Also called posterior scalene.
Anatomy
- Origin
- Posterior tubercles of the transverse processes of C4-C6
- Insertion
- External border of the 2nd rib
- Nerve
- Anterior rami of cervical spinal nerves (C6-C8)
Actions
- Elevates the 2nd 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