Muscles - Upper Extremity Scapular Stabilizers

Trapezius - Upper Fibers

Origin - Occipital Bone

Insertion - Scapula

Scapular elevation

Trapezius - Middle Fibers

Origin - Thoracic Vertebrae

Insertion - Scapula

Scapular retraction

Trapezius - Lower Fibers

Origin - Thoracic Vertebrae

Insertion - Scapula

Scapular depression

Levator Scapulae

Origin - C1 to C4

Insertion - Superior angle of the scapula

Scapular elevation

Rhomboid Minor

Origin - C7 to T1

Insertion - Medial border of the scapula

Scapular retraction

Rhomboid Major

Origin - T2 to T5

Insertion - Medial border of the scapula

Scapular retraction

Serratus Anterior

Origin - Rib

Insertion - Medial border of the scapula (Anterior side)

Scapular retraction

Pectoralis Minor

Origin - Ribs (3-5)

Insertion - Coracoid process of the scapula

Scapular protraction, scapular depression