Anterior Scalene Muscle

The anterior scalene muscle is a deep muscle in the cephalad internal thoracic wall. Its main action is to flex the head. Innervation is from C4 to C6, the superior attachment or origin is to the transverse process of C4 to C6, and the distal attachment or insertion is to the 1st rib. Related Posts [...]

Source: http://insidesurgery.com/2011/04/anterior-scalene-muscle/

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