Origin: Skull, Spinous Processes of Cervical and Thoracic vertebrae

Insertion: Clavicle, acromion process and spine of scapula

A: Rectraction and upward rotation of scapula

N:Spinal Accessory nerve (CN XI)

O: Spinous processes of lower thoracic and lumbar vertebrae, iliac crest

I: Intertubercular groove of humerus

A: "Swimming stroke:" adduction, medial rotation, extension of humerus

N: Thoracodorsal (C6-8)

O: Posterior tubercles of transverse processes of cervical vertebra

I:  Superior angle and medial border above spine of scapula

A: Elevation of medial angle of scapula: downward rotation

N: Dorscal scapular n. (C5) and deep branches of Cervical Plexus

O: Spinous processes of T2-5

I: Medial border of scapula below spine to inferior angle

A: Elevation of medial border of scapula: downward rotation

N: Dorscal scapular n. (C5)

O: Spinous processes of lower cervical vertebra and T1

I: Medial border of scapula at base of the spine

A: Elevation of medial border of scapula: downward rotation

N: Dorscal scapular n. (C5)

O: Lateral surfaces of upper 8-9 ribs

I:  Costal aspect of the medial border of scapula

A: Upward rotation, protraction of scapula

N: Long Thorassic n. (C5-7)