| 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 |
| Actions | 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.
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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.
It can be involved in certain forms of Thoracic outlet syndrome.
This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained within it may be outdated.
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