Serratus Anterior Muscle

The serratus anterior is a muscle that originates on the surface of the second to ninth ribs at the side of the chest and inserts along the entire anterior length of the medial border of the scapula.The serratus anterior is a muscle that originates on the surface of the second to ninth ribs at the side of the chest and inserts along the entire anterior length of the medial border of the scapula.Serratus anterior normally originates by nine or ten slips from either the first to ninth ribs or the first to eighth ribs. Because two slips usually arise from the second rib, the number of slips is greater than the number of ribs from which they originate.

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