Scalenus anterior

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Scalenus anterior
The anterior vertebral muscles. (Scalenus anterior visible at bottom left.)
Section of the neck at about the level of the sixth cervical vertebra. Showing the arrangement of the fascia coli. (Scalenus anterior visible at center left.)
Latin musculus scalenus anterior
Gray's subject #114 396
Origin C3-C6
Insertion    first rib
Artery: Ascending cervical artery (branch of Inferior thyroid artery)
Nerve: ventral ramus of C5, C6
Action: elevate 1st rib, rotate the neck to the opposite side

The Scalenus anterior (Scalenus anticus), also known as anterior scalene muscle, lies deeply at the side of the neck, behind the Sternocleidomastoideus.

It arises from the anterior tubercles of the transverse processes of the third, fourth, fifth, and sixth cervical vertebræ, and descending, almost vertically, is inserted by a narrow, flat tendon into the scalene tubercle on the inner border of the first rib, and into the ridge on the upper surface of the rib in front of 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 As such, some of the information contained herein may be outdated.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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