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serratus anterior


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Muscle of the anterior thorax that lies deep to the scapula and inferior pectoral muscles on the lateral rib cage. The serratus anterior forms the medial wall of the axilla (armpit). The muscle has its origins (which resemble the teeth of a saw) on the first eight or nine ribs, and its insertions on the inner border of the scapula. The serratus anterior is the main muscle responsible for pushing and punching movements; consequently is sometimes referred to as the boxer's muscle.

Subjects: Sports and Exercise Medicine.


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