Scalenus Minimus
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Lead Editors - Vanessa Rhule, Kim Jackson, Wendy Walker and Evan Thomas
Description
Part of the Scalene group (with <a href="Anterior Scalene">Anterior Scalene</a>, <a href="Middle Scalene">Middle Scalene</a> and <a href="Posterior Scalene">Posterior Scalene</a>) of lateral neck muscles,this muscle is absent in a large percentage of the population.
Cadaver studies report finding it on one side in between 7%Am Surg. 2013 Apr;79(4):372-4.fckLRScalenus minimus muscle: overestimated or not? An anatomical study.fckLRNatsis K, Totlis T, Didagelos M, Tsakotos G, Vlassis K, Skandalakis P. and 46%Walter G. Harry, John D.C. Bennett, Somes C. GuhafckLRScalene muscles and the brachial plexus: Anatomical variations and their clinical significancefckLRClinical AnatomyfckLRVolume 10, Issue 4, pages 250–252, 1997 of the population.
AKA Albinus Muscle, Sibson Muscle.
<img src="/images/a/aa/Scalenus_minimus.jpg" _fck_mw_filename="Scalenus minimus.jpg" alt="" />
Origin
C7
Anterior tubercle of transverse process of 7th cervical vertebra
Insertion
1st Rib and suprapleural fascia
Nerve Supply
<a href="Brachial plexus">Brachial Plexus</a> C7 & 8
Branches of the ventral rami of cervical spinal nerves 7 & 8
Blood Supply
Subclavian artery, suprascapular artery and superficial cervical artery
Action
Acting from above, in conjuction with Anterior and Middle Scalene: elevation of 1st rib
Helps raise and tense the dome of the parietal pleura
Function
Accessory muscle of inspiration
Resources
Recent Related Research (from <a href="http://www.ncbi.nlm.nih.gov/pubmed/">Pubmed</a>)
References
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