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14 Cards in this Set

  • Front
  • Back

Subscapularis

Chief medial rotator of arm

Supraspinatus

Initiates abduction of arm

Infraspinatus

Rotates arm laterally, helps hold head of humerus in cavity

Teres minor

Rotates arm laterally

Coracobrachialis

Flexes and adducts arm, synergist of pectoralis major



Pectoralis major

Adducts and medially rotates arm against resistance



Deltoid

Prime mover of arm abduction when all its fibers contract simultaneously

Teres major

Extends, medially rotates, and adducts arm

Triceps branchii

Prime mover, powerful forearm extensor

Biceps branchii

Flexes and supinates forearm

Brachialis

Major forearm flexor

Brachioradialis

Synergist in flexing forearm

Muscles originate anterior to should joint

Pectoralis major, coracobrachialis, and anterior fibers of deltoid


Flex the arm

Muscles originate posterior to shoulder joint

Latissimus dorsi, and posterior fibers of deltoid, teres major


Extend the arm