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The introduction to this article provides insufficient context for those unfamiliar with the subject. Please help improve the article with a good introductory style. (October 2009) |
| Scalenus medius | |
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| The anterior vertebral muscles. (Scalenus medius visible in bottom center-right.) | |
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| 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 |
| Actions | Elevate 1st rib, rotate the neck to the opposite side |
The Scalenus medius, the largest and longest of the three scalene muscles, arises from the posterior tubercles of the transverse processes of the lower six cervical vertebræ. It descendes along the side of the vertebral column to insert by a broad attachment into the upper surface of the first rib, between the tubercle and the subclavian groove. The brachial plexus and the subclavian artery pass anterior to it. Because it elevates the upper ribs, the middle scalene muscle is also one of the accessory muscles of respiration.
See also
Additional images
 Peculiar ribs. |
 Muscles of the neck. Lateral view. |
External links
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 As such, some of the information contained herein may be outdated.
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