Scalenus Minimus
Neck
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A variable/accessory scalene present in roughly 50% of people — sometimes related to thoracic outlet symptoms when it compresses nearby nerves.
Function
May elevate first rib or tense suprapleural membrane
Origin
Transverse processes C6-C7
Insertion
First rib and/or suprapleural membrane
Innervation
Anterior rami of lower cervical nerves, variable