Scalenus anterior

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Anterior scalene
Scalenus anterior01.png
Psotion of scalenus anterior (shown in red.)
Scalenus anterior.png
The anterior vertebral muscles. (Scalenus anterior visible at bottom left in red.)
Latin Musculus scalenus anterior
Gray's p.396
Origin Transverse processes of the third, fourth, fifth, and sixth cervical vertebræ (C3, C4, C5 and C6)
Insertion First rib
Artery Ascending cervical artery (branch of Inferior thyroid artery)
Nerve Ventral ramus of C5, C6
Actions Elevates first rib, rotate the neck to the opposite side
Anatomical terms of muscle

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.

Clinical significance[edit]

It can be involved in certain forms of Thoracic outlet syndrome.

Additional images[edit]

See also[edit]


This article incorporates text from a public domain edition of Gray's Anatomy.

External links[edit]