Chapter 3B (Movement of Glenohumeral Joint) Flashcards
Flexion
Prime mover: Pectoralis major; deltoid
Synergist: Coracobrachialis
Extension
Prime mover: Deltoid
Synergist: Teres major; latissimus dorsi; long head of triceps brachii
Abduction
Prime mover: Deltoid
Synergist: Supraspinatus
Adduction
Prime mover: Pectoralis major; latissimus dorsi
Synergist: teres major; long head of triceps
Medial rotation
Prime mover: Subscapularis
Synergist: Pectoralis major, deltoid, latissimus dorsi, teres major
Lateral rotation
Prime mover: Infraspinatus
Synergist: Teres minor; deltoid
Tensors of articular capsule
Prime mover: Subscapularis; infraspinatus
Synergist: Supraspinatus; teres minor
Resisting downward dislocation
Prime mover: Deltoid
Synergist: Long head of triceps brachii; coracobrachiialis; short head of biceps brachii