Middle Scalene: Difference between revisions
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== Description == | == Description == | ||
Middle Scalene, AKA Scalenus Medius, is the largest and longest muscle in the Scalene group of lateral neck muscles. Often penetrated by the dorsal scapular and long thoracic nerves, it is deeply placed, lying behind Sternocleidomastoid.<br> | Middle Scalene, AKA Scalenus Medius, is the largest and longest muscle in the Scalene group of lateral neck muscles. Often penetrated by the dorsal scapular and long thoracic nerves, it is deeply placed, lying behind [[Sternocleidomastoid|Sternocleidomastoid]].<br> | ||
[[Image: | [[Image:Scalenus medius muscle - animation02.gif]] | ||
== Origin == | == Origin == | ||
<div>C2 to C7</div><div>Posterior tubercles of the transverse processes of | <div>C2 to C7</div><div>Posterior tubercles of the transverse processes of [[Cervical Vertebrae|cervical vertebrae]] 2 to 7</div> | ||
== Insertion == | == Insertion == | ||
1st Rib | 1st Rib | ||
Superior surface of the 1st rib, posterior to the subclavian groove | Superior surface of the 1st rib, posterior to the subclavian groove | ||
== Nerve Supply == | == Nerve Supply == | ||
Cervical nerves 5 to 3 & 4 | Cervical nerves 5 to 3 & 4 | ||
== Blood Supply == | == Blood Supply == | ||
Mscular branches of the ascending cervical artery | Mscular branches of the ascending cervical artery | ||
== Action == | == Action == | ||
Middle scalene acts with [[Anterior_Scalene|anterior]] and [[Posterior_Scalene|posterior scalene]] muscles. | |||
Acting from below: cervical side flexion and rotation<ref>J Orthop Sports Phys Ther. 2002 Oct;32(10):488-96. | <span> </span>Acting from above: elevation of 1st rib | ||
Acting from below: cervical side flexion and rotation<ref>J Orthop Sports Phys Ther. 2002 Oct;32(10):488-96.fckLRActions of the scalene muscles for rotation of the cervical spine in macaque and human.fckLRBuford JA, Yoder SM, Heiss DG, Chidley JV.</ref>; if bilateral action, small degree of cervical flexion | |||
== Function == | == Function == | ||
Acting from above: accessory muscle of inspiration | Acting from above: accessory muscle of inspiration | ||
Acting from below: cervical side flexor and rotator | Acting from below: cervical side flexor and rotator | ||
== Resources == | == Resources == | ||
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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=1pEhTjOZGNUGUm-7rbxUkZq-IjYd8dzBK83PvdsWZriE_BbkdQ|charset=UTF-8|short|max=10</rss> | ||
</div> | </div> | ||
== References == | == References == | ||
Revision as of 01:10, 22 January 2014
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Lead Editors - Wendy Walker, Kim Jackson, Milijana Delevic, Admin, WikiSysop, Wendy Snyders and Evan Thomas
Description[edit | edit source]
Middle Scalene, AKA Scalenus Medius, is the largest and longest muscle in the Scalene group of lateral neck muscles. Often penetrated by the dorsal scapular and long thoracic nerves, it is deeply placed, lying behind Sternocleidomastoid.
Origin[edit | edit source]
Insertion[edit | edit source]
1st Rib
Superior surface of the 1st rib, posterior to the subclavian groove
Nerve Supply[edit | edit source]
Cervical nerves 5 to 3 & 4
Blood Supply[edit | edit source]
Mscular branches of the ascending cervical artery
Action[edit | edit source]
Middle scalene acts with anterior and posterior scalene muscles.
Acting from above: elevation of 1st rib
Acting from below: cervical side flexion and rotation[1]; if bilateral action, small degree of cervical flexion
Function[edit | edit source]
Acting from above: accessory muscle of inspiration
Acting from below: cervical side flexor and rotator
Resources[edit | edit source]
Recent Related Research (from Pubmed)[edit | edit source]
Failed to load RSS feed from http://www.ncbi.nlm.nih.gov/entrez/eutils/erss.cgi?rss_guid=1pEhTjOZGNUGUm-7rbxUkZq-IjYd8dzBK83PvdsWZriE_BbkdQ|charset=UTF-8|short|max=10: Error parsing XML for RSS
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.fckLRActions of the scalene muscles for rotation of the cervical spine in macaque and human.fckLRBuford JA, Yoder SM, Heiss DG, Chidley JV.
