Upper Extremity Muscles Flashcards
Assists deltoid in abduction of the humerus at the shoulder
Supraspinatus
External rotation of the humerus at the shoulder joint
Infraspinatus
Assists adduction and rotation of the arm laterally
Extends arm at shoulder and rotation of the arm externally
Teres minor
Internal rotation of the arm at the shoulder
Subscapularis
Abducts, flexes, extends, and rotates arm at the shoulder joint
Deltoid
Multiple fibers in this large muscle move the scapula multi-directionally
Trapezius
Elevates the scapula and rotates downward
Levator scapula
Elevates and adducts scapula and rotates downward
Stabilizes scapula
Rhomboid major
Adducts and rotates arm medially at the shoulder
Flexes arm at the shoulder joint
Pectoralis major
Extends, adducts, and rotates arm medially at the shoulder joint
Draws arm downward and backward
Latissimus dorsi
Extends arm at the shoulder joint
Assists with adduction and rotation of arm medially
Teres major
Flexes and adducts arm at the shoulder
Coracobrachialis
Flexes arm at the shoulder
Flexes and supinates forearm at the elbow
Biceps Brachii
Flexes forearm at the elbow joint
Brachialis
Brachioradialis
Extends forearm at the elbow joint
Extends arm at the shoulder
Triceps brachii
Supinates forearm
Supinator
Pronates forearm
Pronator teres
Flexes and abducts hand at the wrist
Flexor carpi radialis
Flexes and adducts hand at the wrist
Flexor carpi ulnaris
Weakly flexes hand at the wrist joint
Palmaris
Flexes hand at wrist
Flexes phalanges of each finger at the PIP joint
Flexor Digitorum Superficialis
Flexes hand at wrist
Flexes phalanges of each finger at DIP joint
Flexor Digitorum Profundus
Extends and abducts hand at the wrist joint
Extensor carpi radialis longus
Extends and adducts hand at the wrist joint
Extensor carpi ulnaris
Extends hand at wrist joint
Extends phalanges of each finger
Extensor digitorum
