Scalenus medius

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Scalenus medius
The anterior vertebral muscles. (Scalenus medius visible in bottom center-right.)
Section of the neck at about the level of the sixth cervical vertebra. Showing the arrangement of the fascia coli. (Scalenus medius visible at center left.)
Latin musculus scalenus medius
Gray's subject #114 396
Origin C2-C6
Insertion    first rib
Artery: Ascending cervical artery (branch of Inferior thyroid artery)
Nerve: Ventral rami of the third to eighth cervical spinal nerves
Action: Elevate 1st rib, rotate the neck to the opposite side

The Scalenus medius, the largest and longest of the three Scaleni, arises from the posterior tubercles of the transverse processes of the lower six cervical vertebræ, and descending along the side of the vertebral column, is inserted by a broad attachment into the upper surface of the first rib, between the tubercle and the subclavian groove.

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This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.

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