Muscle
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Muscle
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Viette Lab 4-part 2
Muscles of the Arms and Hands
Muscle | Action | Origin | Insertion |
---|---|---|---|
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 |