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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.

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

How can I strengthen it?

• Push-ups
• Push-ups using a resistance band