Serratus Anterior

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Description[edit | edit source]

Origin[edit | edit source]

It originates on the top surface of the eight or nine upper ribs. [1]

Insertion[edit | edit source]

It inserts exactly at the front border of the scapula, or shoulder blade.[1]

Nerve[edit | edit source]

The long thoracic nerve supplies the serratus anterior muscle.

Artery[edit | edit source]

Function[edit | edit source]

The function of the serratus anterior muscle is to allow the forward rotation of the arm and to pull the scapula forward and around the rib cage. The scapula is able to move laterally due to the serratus anterior muscle, which is vital for the elevation of the arm. The serratus anterior muscle also allows the upward rotation of the arm, which allows a person to lift items over their head.[1]

Clinical relevance[edit | edit source]

Assessment[edit | edit source]

Treatment[edit | edit source]

Resources[edit | edit source]