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Viette Lab 4-part 2

Muscles of the Arms and Hands

MuscleActionOriginInsertion
Deltoid Abducts arm, extends and lateral rotation or flexes and medially rotates arm Clavicle, Acromion Process and Spine of Scapula Deltoid Tuberosity of Humerus
Biceps brachii flexes elbow, supinator coracoid process and supraglenoid tubercle of scapula radial tuberosity of radius
Brachialis flexes elbow anterior distal Humerus Coronoid process and tuberosity of Ulna
Brachioradialis flexes elbow lateral, distal Humerus Styloid process of radius
Triceps brachii extends the forearm scapula and Humerus Olecranon Process of Ulna
Flexor carpi radialis flexes wrist and abducts the hand Humerus Second and third metacarpals
Flexor Carpi Ulnaris flexes and adducts the wrist Humerus and Ulna Carpal and metacarpal bones
Extensor digitorum extends wrist, and and digits lateral epicondyle of Humerus Middle phalanges of digits
Extensor carpi radialis longue extends and abducts wrist Humerus second metacarpal
Extensor carpi ulnaris extends and adducts wrist Humerus and Ulna fifth metacarpal
Pectoralis Major flexes, adducts, and rotates arm medially, pulls arm across chest Clavicle, sternum, costal cartilages of one to sixth rib intertubercular Groove of Humerus
Latissimus dorsi extends, adducts and rotates Humerus medially, retracts shoulder Sacral, lumbar and lower thoracic vertebrae, iliac crest and lower ribs intertubercular Groove of Humerus
Created by: Drbrown2346
 

 



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