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Action: Elevates the first rib; flexes and laterally bends the neckOrigin - Anterior tubercles of the transverse processes of vertebrae C3-C6Insertion - Scalene tubercle of the first ribInnervation - Brachial plexus, C5-C7

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1.
Action: Elevates the first rib; flexes and laterally bends the neck
Origin - Anterior tubercles of the transverse processes of vertebrae C3-C6
Insertion - Scalene tubercle of the first rib
Innervation - Brachial plexus, C5-C7





 
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