Flexor carpi ulnaris Medial head of triceps brachii Pectoralis major (sternal head is cut) Long head of triceps brachii Acromion process Clavicle Humerus Deltoid Brachialis Extensor digitorum Tendons of the extensor digitorum Spine of scapula Palmaris longus Brachioradialis Flexor carpi ulnaris Radial nerve Brachial plexus Radial artery Ulnar nerve Biceps Brachii Flexor carpi ulnaris Tendons of the flexor digitorum Medial head of triceps brachii Tendon of triceps brachii Lateral head of triceps brachii Long head of triceps brachii Latissimus dorsi (cut) Infraspinatus Teres major Subscapularis Deltoid Brachialis Extensor digitorum Spine of scapula Palmaris longus Flexor digitorum superficialis Flexor carpi ulnaris Median nerve Vetebral border of scapula Brachial artery Ulnar nerve Teres minor Extensor carpi ulnaris Location of olecranon process