Scalenus anterior

From Wikipedia, the free encyclopedia

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:
Nerve:	ventral ramus of C5, C6
Action:	elevate 1st rib, rotate the neck to the opposite side
Dorlands/Elsevier	m_22/12550636

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.

[edit] Additional images

A cervical vertebra	Peculiar ribs.	Muscles of the neck. Lateral view.	Superficial dissection of the right side of the neck, showing the carotid and subclavian arteries.
The internal mammary artery and its branches.	The right brachial plexus with its short branches, viewed from in front.

[edit] See also

• Scalene muscles
• Accessory muscles of respiration

[edit] External links

• LUC sa
• GPnotebook 1074135100
• Dictionary at eMedicine scalenus+anterior+muscle

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 As such, some of the information contained herein may be outdated.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.