Scalenus Minimus

Original Editor - <a href="User:Wendy Walker">Wendy Walker</a>

Top Contributors - Vanessa Rhule, Kim Jackson, Wendy Walker and Evan Thomas  

Description

Part of the Scalene group 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 <a href="Anterior Scalene">Anterior</a> and <a href="Middle Scalene">Middle</a> Scalene: elevation of 1st rib

Helps raise and tense the dome of the parietal pleura

Function

Accessory muscle of inspiration

Recent Related Research 

http://www.ncbi.nlm.nih.gov/entrez/eutils/erss.cgi?rss_guid=12KS9FYSUmvgjvtuBg0_9KK4ymOJrqpIQUNQLDOokmdvSsH9jh%7Ccharset=UTF-8%7Cshort%7Cmax=10

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