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Muscles Involved In Upper Limb Movements

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casiyise's version from 2015-11-29 15:28

Movements at the shoulder

NB: All movements at the shoulder involve both the glenohumeral joint and scapular movements, especially abduction (120 degrees by glenohumeral, rest by scapula)
Abduction
Question Answer
GlenohumeralSupraspinatus (first 15 degrees mostly)
GlenohumeralDeltoid
Scapular (upward rotation)Trapezius
Scapular (upward rotation)Serratus anterior
memorize

 

Adduction
Question Answer
GlenohumeralTeres major
GlenohumeralPectoralis major
GlenohumeralLatissimus dorsi
Scapular (downward rotation)Pectoralis minor
Scapular (downward rotation)Rhomboids
BothGravity
memorize

 

Flexion
Question Answer
Prime moverPectoralis major (clavicular head)
Prime moverDeltoid (anterior part)
SynergistCoracobrachialis assisted by biceps brachii
memorize

 

Extension
Question Answer
Prime moverDeltoid (spinal part)
SynergistTeres major,
SynergistLatissimus dorsi
SynergistLong head of triceps brachii
memorize

 

Medial Rotation
Question Answer
Prime moverSubscapularis
SynergistPectoralis major
SynergistDeltoid (clavicular part)
SynergistTeres major
SynergistLatissiums dorsi
memorize

 

Lateral Rotation
Question Answer
Prime moverInfraspinatus
SynergistTeres minor
SynergistDeltoid (spinal part)
memorize

Movements at the Elbow

 

Flexion
Question Answer
Light weightBrachialis
Fast, hand midproneBrachioradialis
PowerBiceps brachii
SynergistCoracobrachialis
SynergistPronator teres
memorize

 

Extension
Question Answer
Prime moverTriceps brachii
SynergistAnconeus
memorize

 

Pronation
Question Answer
Prime moverPronator teres
Prime moverPronator quadratus
SynergistBrachioradialis
memorize

 

Supination
Question Answer
Prime moverSupinator
Prime moverBiceps brachii
SynergistBrachioradialis
memorize

Movement at the Hands

 

Power grip
Question Answer
Motor unitsLarge
Finger FlexionFlexor digitorum superficialis and profundus
Thumb flexionFlexor pollicis longus and brevis
Thumb adductionAdductor pollicis
Thumb oppositionOpponens pollicis
Extend wristExtensor carpi radialis and ulnaris
memorize

 

Precision grip
Question Answer
Finger flexionFlexor digitorum superficialis
Fingers anglesLumbricals
Thumb flexionFlexor pollicis brevis
Thumb adductionAdductor pollicis
Thumb oppositionOpponens pollicis
memorize