Trapezius 

Upper: Elevation of Scapula 

              Scapular upward rotation

              Capital & cervical Extension (bi-lat)

             Rotation of head to opposite side (uni)

Middle: Adduction of Scapula 

Lower: Depression of scapula

              Adduction of scapula 

              Scapular upward rotation 

Rhomboid Major & 

Minor 

Scapular adduction

Scapular downward rotation 

Scapular elevation 

Scapular elevation 

Scapular adduction 

Scapular downward rotation 

Cervical rotation to same side (uni)

Cervical side bending to same side (uni)

Assist: cervical extension (bi-lat)

Scapular abduction 

Scapular upward rotation 

Keeps medial border of scapula drawn anteriorly close to thoracic wall; prevents "winging" 

> Scapular protraction/ abduction

> Elevation of ribs in forced inspiration with scapula fixed

> Shoulder extension 

> Shoulder adduction

> Shoulder IR

Acting bi-lat with humeral head attachment fixed:

> Hyper-extension of spine 

> Anterior tilt of pelvis 

Whole: Shoulder adduction 

              Shoulder IR 

              Elevation of thorax in forced inspiration (with UE fixed) 

Upper (clavicular): Shoulder IR 

                                   Shoulder flexion 

                                   Shoulder horizontal adduction 

Lower (sternocostal): > Obliquely adduct                        shoulder (toward opposite hip) 

                     > Shoulder extension 

Shoulder IR 

Stabilization of GH joint 

Anterior: Shoulder flexion

                    Shoulder IR 

                    Shoulder horizontal adduction 

Middle: Shoulder abduction 

Posterior:Shoulder extension 

                    Shoulder ER

                    Shoulder horizontal abduction 

Shoulder abduction 

Stabilization of GH joint 

Shoulder ER

Stabilization of GH joint

Shoulder ER

Stabilization of GH joint

Shoulder extension (from a flexed position)

Shoulder adduction 

Shoulder IR 

Shoulder flexion

Shoulder adduction

> Shoulder flexion 

> Elbow flexion 

> Forearm supination 

> Stabilization of GH joint 

> Whole: elbow extension 

> Long Head: assists in shoulder extension and adduction 

> Pronation of forearm

> Assists: elbow flexion 

> Wrist extension

> Radial (abduction) deviation

> Assists: elbow flexion

> Wrist extension 

> Assists: radial deviation 

> Wrist extension 

> Ulnar (adduction) deviation  

> Wrist flexion 

> Radial deviation (abduction) 

>Assist: elbow flexion

> Assist: forearm pronation  

> Wrist flexion 

> Tenses palmar fascia 

> Wrist flexion 

> Ulnar deviation (adduction) 

> Assist: elbow flexion

> MP extension (2-5 digits) 

> IP extension in conjunction with the hand intrinsics (2-5 digits); without the intrinsics produces MP hyperextension

> Assist: wrist extension 

> MP extension of index finger 

> IP extension in conjunction  with the hand intrinsics of the index finger 

> Assist: wrist extension 

> PIP flexion (2-5 digits) 

>Assist: MP flexion (2-5 digits) 

> Assist: wrist flexion

> DIP flexion (2-5 digits) 

> Assist: MP & PIP flexion (2-5 digits) 

> Assist: wrist flexion

> Little finger MP & IP extension with the hand intrinsics of the little finger 

> Assist: wrist extension 

> Assist: abduction of 5^th digit 

> Little finger abduction 

>Assist: little finger opposition 

> May assist: little finger MCP flexion & IP extension 

> Little finger MP flexion 

> Assist: little finger opposition 

> MP flexion and simultaneous PIP & DIP extension 

> 4^th lumbrical assist opposition of 5^th digit 

> MP abduction at the index, middle and ring fingers

> Assist: MP flexion

                     IP extension

                               1^st assist thumb adduction

> MP adduction at the: index, ring & little fingers

> Assist: MP flexion

                     IP extension

           Opposition of digit 5 (3^rd interosseus)

> Thumb CMC abduction 

> Thumb CMC extension 

> Radial deviation 

> Assist: wrist flexion

> Thumb IP extension 

> Assist: Thumb MP extension 

Thumb CMC extension 

Radial deviation

Extensor Pollicis

Brevis

> Thumb MP extension 

> Thumb CMC extension 

> Thumb CMC abduction

>Assist: radial deviation

               wrist extension

Flexor Pollicis 

Longus

> Thumb IP flexion

> Assist: MP flexion 

                  CMC flexion

                     Wrist Flexion 

Flexor Pollicis 

Brevis 

> Thumb MP flexion 

> Thumb CMC flexion 

> Assist: thumb opposition 

Abductor Pollicis

Brevis 

> Thumb CMC abduction 

> Thumb MP abduction 

> Assist: thumb opposition

                      thumb IP extension 

Opponens Pollicis 

> Thumb CMC opposition 

(via simultaneous CMC flexion, abduction, and IR) 

> Thumb CMC adduction

>Assist: thumb MP adduction

            thumb MP flexion