Honors Anatomy: AOI Chart- Arm Muscles

Triceps Brachii (Long Head)

Action: Extend at the elbow Origin: Infraglenoid tubercle of the scapula Insertion: Ulna

Triceps Brachii (Short Head)

Action: Extend at the elbow Origin: Posterior surface of the proximal half of the humerus Insertion: Ulna

Extensor Carpi Ulnaris

Action: Extend at the wrist Origin: Posterior middle section of the ulna Insertion: Triqeutral

Brachioradialis

Action: Flex at the elbow Origin: Distal half of the anterior surface of the humerus Insertion: Ulna

Flexor Carpi Radialis

Action: Flex at the wrist Origin: Humerus Insertion: Base of scaphoid

Flexor Carpi Ulnaris

Action: Flex at the wrist Origin: Humerus and proximal ulna Insertion: Pisiform and Hamate

Biceps Brachii (Short Head)

Action: Flex the arm Origin: Coracoid process of the scapula Insertion: Radius and Ulna

Biceps Brachii (Long Head)

Action: Flex the arm Origin: Supraglenoid tubercle of the scapula Insertion: Radius and Ulna

Pronator Teres

Action: Pronates at the ulna and radius Origin: Ulna and Humerus Insertion: Lateral area of the radius

Supinator

Action: Supination of the forearm Origin: Ulna and Humerus Insertion: Proximal portion of the radius