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Serratus Anterior

The Serratus Anterior muscle is used in activities which draw the scapula forwards. It is used strongly in push-ups and bench presses. Winged scapula are an indicator of having a weak Serratus Anterior muscle.

Origin

  • Upper nine ribs at the side of the chest

Insertion

  • Costal aspect (side articulating with the ribs) of the medial border of the scapula

Actions

  • Scapula protraction
  • Rotation of the scapula upwards

Innervation

  • Long thoracic nerve

Daily uses

  • Reaching up to open a high window

Example strengthening exercises

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