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The Serratus Anterior Muscle is a flat, broad muscle that originates from the upper eight or nine ribs on the side of the human trunk and inserts onto the anterior surface of the medial (inner) border of the scapula (shoulder blade). It is innervated by the long thoracic nerve, which originates from the brachial plexus. The primary function of the serratus anterior is to pull the scapula forward around the thorax. This muscle plays a key role in upper extremity movements, particularly in raising