Anterior Scalene: Difference between revisions
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== Description == | == Description == | ||
Anterior Scalene, AKA Scalenus anterior ( or even Scalenus anticus) is one of the lateral muscles of the neck, belonging to the Scalene group. It is deeply placed, lying behind Sternocleidomastoid. | Anterior Scalene, AKA Scalenus anterior ( or even Scalenus anticus) is one of the lateral muscles of the neck, belonging to the Scalene group. It is deeply placed, lying behind [[Sternocleidomastoid|Sternocleidomastoid]]. | ||
It is located between the subclavian vein and the subclavian artery; the roots of the brachial plexus pass posterior to it; the phrenic nerve crosses its anterior surface. | It is located between the subclavian vein and the subclavian artery; the roots of the [[Brachial plexus|brachial plexus]] pass posterior to it; the phrenic nerve crosses its anterior surface.<br> | ||
[[Image:Scalenus anterior - animation04.gif]]<br> | |||
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== Origin == | == Origin == | ||
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C3-6 | C3-6 | ||
Anterior tubercles of the transverse processes of the third, fourth, fifth, and sixth cervical vertebrae. | Anterior tubercles of the transverse processes of the third, fourth, fifth, and sixth [[Cervical Vertebrae|cervical vertebrae.]] | ||
== Insertion == | == Insertion == | ||
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== Action == | == Action == | ||
Acts with Middle and Posterior Scalenes | Acts with[[Middle Scalene|Middle]] and [[Posterior Scalene|Posterior Scalenes]] | ||
When the Scalenes act from above, they elevate the first and second ribs. | When the Scalenes act from above, they elevate the first and second ribs. | ||
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== Recent Related Research (from [http://www.ncbi.nlm.nih.gov/pubmed/ Pubmed]) == | == Recent Related Research (from [http://www.ncbi.nlm.nih.gov/pubmed/ Pubmed]) == | ||
<div class="researchbox"> | <div class="researchbox"> | ||
<rss> | <rss>http://www.ncbi.nlm.nih.gov/entrez/eutils/erss.cgi?rss_guid=1xGbfOrFGi2b0hhx7XomwycAW5R2kGEwcUbYvCQfDxSn97LgLm|charset=UTF-8|short|max=10</rss> | ||
</div> | </div> | ||
== References == | == References == | ||
Revision as of 01:04, 22 January 2014
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Description[edit | edit source]
Anterior Scalene, AKA Scalenus anterior ( or even Scalenus anticus) is one of the lateral muscles of the neck, belonging to the Scalene group. It is deeply placed, lying behind Sternocleidomastoid.
It is located between the subclavian vein and the subclavian artery; the roots of the brachial plexus pass posterior to it; the phrenic nerve crosses its anterior surface.
Origin[edit | edit source]
C3-6
Anterior tubercles of the transverse processes of the third, fourth, fifth, and sixth cervical vertebrae.
Insertion[edit | edit source]
1st rib
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.
Nerve Supply[edit | edit source]
Brachial plexus, C5-7
Anterior branches of the Cervical nerves 5 to 7
Blood Supply[edit | edit source]
Ascending cervical branch of the inferior thyroid artery
Action[edit | edit source]
Acts withMiddle and Posterior Scalenes
When the Scalenes act from above, they elevate the first and second ribs.
Acting from below, they produce side flexion of the vertebral column; if the muscles of both sides act, the vertebral column is slightly flexed.
All 3 scalene muscles produce rotation of the cervical spine to the same side[1].
Function[edit | edit source]
When acting from above, they help to elevate the 1st rib and are accessory muscles of respiration.
Acting from below they are cervical flexors and rotators.
Resources[edit | edit source]
Recent Related Research (from Pubmed)[edit | edit source]
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References[edit | edit source]
References will automatically be added here, see adding references tutorial.
- ↑ J Orthop Sports Phys Ther. 2002 Oct;32(10):488-96. Actions of the scalene muscles for rotation of the cervical spine in macaque and human. Buford JA, Yoder SM, Heiss DG, Chidley JV.
